Dejan Ignjatovic

• Stimec, Bojan V. & Ignjatovic, Dejan (2024). Left–Right Multimodal Morphometric Comparison of Human Submandibular Glands. Applied Sciences. ISSN 2076-3417. 14(6). doi: 10.3390/app14062474.
• Gachabayov, Mahir; Kajmolli, Agon; Quintero, Luis; Felsenreich, Daniel M.; Popa, Dorin E. & Ignjatovic, Dejan [Show all 7 contributors for this article] (2024). Inadvertent laparoscopic lavage of perforated colon cancer: a systematic review. Langenbeck's Archives of Surgery. ISSN 1435-2443. 409(1). doi: 10.1007/s00423-023-03224-5.
• Malik, Yasir Gulzar; Saltyte Benth, Jurate; Hamre, Hanne Mari; Færden, Arne Engebreth; Ignjatovic, Dejan & Schultz, Johannes Kurt (2023). Chemotherapy reduces long-term quality of life in recurrence-free colon cancer survivors (LaTE study)—a nationwide inverse probability of treatment-weighted registry-based cohort study and survey. Colorectal Disease. ISSN 1462-8910. doi: 10.1111/codi.16807. Full text in Research Archive
• Singh, Banipal Gurpreet; Stimec, Bojan Vladimir; Andersen, Solveig Norheim; Edwin, Bjørn von Gohren; Næsgaard, Jens Marius & Saltyte Benth, Jurate [Show all 7 contributors for this article] (2023). Are Metastatic Central Lymph Nodes (D3 volume) in right-sided Colon Cancer a Sign of Systemic Disease? A sub-group Analysis of an Ongoing Multicenter Trial. Annals of Surgery. ISSN 0003-4932. 279(4), p. 648–656. doi: 10.1097/SLA.0000000000006099. Full text in Research Archive Show summary

  Objective: Assess outcomes of patients with right-sided colon cancer with metastases in the D3 volume after personalized surgery. Background: Patients with central lymph node metastasis (D3-PNG) are considered to have a systemic disease with a poor prognosis. A 3-dimensional definition of the dissection volume allows the removal of all central nodes. Methods: D3-PNG includes consecutive patients from an ongoing clinical trial. Patients were stratified into residual disease negative (D3-RDN) and residual disease positive (D3-RDP) groups. D3-RDN was further stratified into four periods to identify a learning curve. A personalized D3 volume (defined through arterial origins and venous confluences) was removed "en bloc" through medial-to-lateral dissection, and the D3 volume of the specimen was analyzed separately. Results: D3-PNG contained 42(26 females, 63.1SD9.9 y) patients, D3-RDN:29(17 females, 63.4SD10.1 y), and D3-RDP:13(9 females, 62.2SD9.7 y). Mean overall survival (OS) days D3-PNG:1230, D3-RDN:1610, D3-RDP:460. Mean disease-free survival (DFS) was D3-PNG:1023, D3-RDN:1461, D3-RDP:74 days. The probability of OS/ DFS in D3-PNG:52.1%/50.2%, D3-RDN:72.9%/73.1%, D3-RDP: 7.7%/0%. There is a significant change in OS/DFS in the D3-RDN from 2011-2013 to 2020-2022(both P=0.046) and from 2014-2016 to 2020-2022 (P=0.028 and P=0.005,respectively). Conclusion: Our results indicate that surgery can achieve survival in most patients with central lymph node metastases by removing a personalized and anatomically defined D3 volume. The extent of mesenterectomy and the quality of surgery are paramount since a learning curve has demonstrated significantly improved survival over time, despite the low number of patients. These results imply a place for the centralization of this patient group, where feasible.

• Moen, Tine Marie Enoksen; Stimec, Bojan & Ignjatovic, Dejan (2022). The Use of a Vascular Roadmap at Surgery Evens out Surgeons' Expectations on Operating Time, Blood Loss, Lymph Nodes Harvest and Operative Difficulty when Performing Right Colectomy with Extended D3 Mesenterectomy. Chirurgia. ISSN 1221-9118. 117(5), p. 579–584. doi: 10.21614/chirurgia.2766. Full text in Research Archive
• Stimec, Bojan V. & Ignjatovic, Dejan (2022). Visible Lymph Affluents in the D3 Volume: An MDCTA Pictorial Essay. Diagnostics (Basel). ISSN 2075-4418. 12(10). doi: 10.3390/diagnostics12102441. Full text in Research Archive
• Stimec, Bojan V.; Ignjatovic, Dejan & Lobrinus, Johannes A. (2022). Establishing correlations between normal pancreatic and submandibular gland ducts. BMC Gastroenterology. ISSN 1471-230X. 22(1). doi: 10.1186/s12876-022-02443-2. Full text in Research Archive
• Andersen, Bjarte Tidemann; Stimec, Bojan V.; Kazaryan, Airazat M.; Rancinger, Peter Ivan; Edwin, Bjørn von Gohren & Ignjatovic, Dejan (2022). Re-interpreting mesenteric vascular anatomy on 3D virtual and/or physical models, part II: anatomy of relevance to surgeons operating splenic flexure cancer. Surgical Endoscopy. ISSN 0930-2794. 36, p. 9136–9145. doi: 10.1007/s00464-022-09394-5. Full text in Research Archive
• Singh, Banipal Gurpreet; Stimec, Bojan Vladimir; Andersen, Solveig Norheim; Færden, Arne Engebreth; Edwin, Bjørn von Gohren & Baral, J. [Show all 9 contributors for this article] (2022). Comparing 5-Year Survival Rates Before and After Re-stratification of Stage I–III Right-Sided Colon Cancer Patients by Establishing the Presence/Absence of Occult Tumor Cells and Lymph Node Metastases in the Different Levels of Surgical Dissection. Journal of Gastrointestinal Surgery. ISSN 1091-255X. 26(10), p. 2201–2211. doi: 10.1007/s11605-022-05434-6. Full text in Research Archive Show summary

  To establish the impact of re-stratification on the outcomes of patients (stage I–III right-sided colon cancer) based on the presence/absence of occult tumor cells (OTC) and/or metastatic lymph nodes in the different levels of surgical dissection. Methods Consecutive patients were drawn from a multicenter prospective trial. After surgery, the surgical specimen was divided into the D1/D2 and D3 volumes before being further analyzed separately. All lymph nodes were examined with cytokeratin CAM 5.2 immunohistochemically. Lymph nodes containing metastases and OTC (micrometastases; isolated tumor cells) were identified. Re-stratification was as follows: RS1, stages I/II, no OTC in D1/D2 and D3 volumes; RS2, stages I/II, OTC in D1/D2 and/or D3; RS3, stage III, lymph node metastases in D1/D2, with/without OTC in D3; RS4, stage III, lymph node metastases in D3, with/without OTC in D3. Results Eighty-seven patients (39 men, 68.4 + 9.9 years) were included. The standard stratified (SS) group contained the following: stages I/II (SS1) 57 patients; stage III (SS2) 30 patients. Re-stratified (RS) contained RS1 (38), RS2 (19), RS3 (24), and RS4 (6) patients. Lymph node ratio (OTC) RS2: 0.157 D1/D2; 0.035 D3 and 0.092 complete specimens. Lymph node ratio RS3: 0.113 D1/D2; complete specimen 0.056. Overall survival and disease-free survival were p = 0.875 and p = 0.049 for SS and p = 0.144 and p = 0.001 for RS groups, respectively. Conclusion This re-stratification identifies a patient group with poor prognosis (RS4). Removing this group from SS2 eliminates all the differences in survival between RS2 and RS3 groups. The level of dissection of the affected nodes may have an impact on survival.

• Luzon, Javier; Thorsen, Yngve; Parreiras Nogueira, Liebert; Andersen, Solveig Norheim; Edwin, Bjørn von Gohren & Haugen, Håvard Jostein [Show all 8 contributors for this article] (2022). Reconstructing topography and extent of injury to the superior mesenteric artery plexus in right colectomy with extended D3 mesenterectomy: a composite multimodal 3-dimensional analysis. Surgical Endoscopy. ISSN 0930-2794. 36(10), p. 7607–7618. doi: 10.1007/s00464-022-09200-2. Full text in Research Archive Show summary

  Background Superior mesenteric artery plexus (SMAP) injury is reported to cause postoperative intractable diarrhea after pancreatic/colonic surgery with extended lymphadenectomy. This study aims to describe the SMAP microanatomy and extent of injury after right colectomy with extended D3 mesenterectomy for cancer. Methods Three groups (I) anatomical dissection, (II) postmortem histology, and (III) surgical specimen histology were included. Nerve count and area were compared between groups II and III and paravascular sheath thickness between groups I and II. 3D models were generated through 3D histology, nanoCT scanning, and finally through 3D printing. Results A total of 21 specimens were included as follows: Group (I): 5 (3 females, 80–93 years), the SMAP is a complex mesh surrounding the superior mesenteric artery (SMA), branching out, following peripheral arteries and intertwining between them, (II): 7 (5 females, 71–86 years), nerve count: 53 ± 12.42 (38–68), and area: 1.84 ± 0.50 mm2 (1.16–2.29), and (III): 9 (5 females, 55–69 years), nerve count: 31.6 ± 6.74 (range 23–43), and area: 0.889 ± 0.45 mm2 (range 0.479–1.668). SMAP transection injury is 59% of nerve count and 48% of nerve area at middle colic artery origin level. The median values of paravascular sheath thickness decreased caudally from 2.05 to 1.04 mm (anatomical dissection) and from 2.65 to 1.17 mm (postmortem histology). 3D histology models present nerve fibers exclusively within the paravascular sheath, and lymph nodes were observed only outside. NanoCT-derived models reveal oblique nerve fiber trajectories with inclinations between 35° and 55°. Two 3D-printed models of the SMAP were also achieved in a 1:2 scale. Conclusion SMAP surrounds the SMA and branches within the paravascular sheath, while bowel lymph nodes and vessels lie outside. Extent of SMAP injury on histological slides (transection only) was 48% nerve area and 59% nerve count. The 35°–55° inclination range of SMAP nerves possibly imply an even larger injury when plexus excision is performed (lymphadenectomy). Reasons for later improvement of bowel function in these patients can lie in the interarterial nerve fibers between SMA branches.

• Singh, Banipal Gurpreet; Stimec, Bojan V.; Andersen, Solveig Norheim; Færden, Arne Engebreth; Edwin, Bjørn von Gohren & Baral, Joerg [Show all 8 contributors for this article] (2021). Interactions of occult tumor spread and surgical technique on overall and disease-free survival in patients operated for stage I and II right-sided colon cancer. Journal of Cancer Research and Clinical Oncology. ISSN 0171-5216. 147(12), p. 3535–3543. doi: 10.1007/s00432-021-03773-6. Full text in Research Archive
• Sahakyan, Mushegh A.; Verbeke, Caroline S.; Tholfsen, Tore; Ignjatovic, Dejan; Kleive, Dyre & Buanes, Trond [Show all 10 contributors for this article] (2021). Prognostic Impact of Resection Margin Status in Distal Pancreatectomy for Ductal Adenocarcinoma. Annals of Surgical Oncology. ISSN 1068-9265. 29, p. 366–375. doi: 10.1245/s10434-021-10464-6. Full text in Research Archive
• Thorsen, Yngve; Stimec, Bojan V.; Lindstrom, Jonas Christoffer; Oresland, Tom & Ignjatovic, Dejan (2021). Stool dynamics after extrinsic nerve injury during right colectomy with extended D3-mesenterectomy. Scandinavian Journal of Gastroenterology. ISSN 0036-5521. 56(7), p. 770–776. doi: 10.1080/00365521.2021.1918757. Full text in Research Archive
• Sahakyan, Mushegh; Røsok, Bård Ingvald; Tholfsen, Tore; Kleive, Dyre; Waage, Anne & Ignjatovic, Dejan [Show all 9 contributors for this article] (2021). Implementation and training with laparoscopic distal pancreatectomy: 23-year experience from a high-volume center. Surgical Endoscopy. ISSN 0930-2794. p. 1–12. doi: 10.1007/s00464-021-08306-3. Full text in Research Archive
• Andersen, Bjarte Tidemann; Stimec, Bojan V.; Edwin, Bjørn; Kazaryan, Airazat M.; Maziarz, Przemyslaw J & Ignjatovic, Dejan (2021). Re-interpreting mesenteric vascular anatomy on 3D virtual and/or physical models: positioning the middle colic artery bifurcation and its relevance to surgeons operating colon cancer. Surgical Endoscopy. ISSN 0930-2794. 36, p. 100–108. doi: 10.1007/s00464-020-08242-8. Full text in Research Archive
• Gallo, Gaetano; Pata, Francesco; Vennix, S.; Laurberg, S.; Morton, D. & Rubbini, M. [Show all 1,087 contributors for this article] (2020). Predictors for anastomotic leak, postoperative complications, and mortality after right colectomy for cancer: Results from an international snapshot audit. Diseases of the Colon & Rectum. ISSN 0012-3706. 63(5), p. 606–618. doi: 10.1097/DCR.0000000000001590.
• Arezzo, Alberto; Francis, Nader; Mintz, Yoav; Adamina, Michel; Antoniou, Stavros A & Bouvy, Nicole [Show all 19 contributors for this article] (2020). EAES Recommendations for Recovery Plan in Minimally Invasive Surgery Amid COVID-19 Pandemic. Surgical Endoscopy. ISSN 0930-2794. 35(1), p. 1–17. doi: 10.1007/s00464-020-08131-0. Full text in Research Archive
• Milone, Marco; Carrano, Francesco Maria; Letic, Emina; Shamiyeh, Andreas; Forgione, Antonello & Eom, Bang Wool [Show all 22 contributors for this article] (2020). Surgical challenges and research priorities in the era of the COVID-19 pandemic: EAES membership survey. Surgical Endoscopy. ISSN 0930-2794. 34(10), p. 4225–4232. doi: 10.1007/s00464-020-07835-7.
• Stimec, Bojan V. & Ignjatovic, Dejan (2020). Navigating the mesentery: Part III. Unusual anatomy of ileocolic vessels. Colorectal Disease. ISSN 1462-8910. 22(12), p. 1949–1957. doi: 10.1111/codi.15284. Full text in Research Archive
• Malik, Yasir Gulzar; Lyckander, Lars Gustav; Lindstrøm, Jonas Christoffer; Holmquist, Olof Dan Sebastian; Sheikh, Ariba Ehsan & Schultz, Johannes Kurt [Show all 7 contributors for this article] (2020). Stratification of Stage III colon cancer may identify a patient group not requiring adjuvant chemotherapy. Journal of Cancer Research and Clinical Oncology. ISSN 0171-5216. p. 1–11. doi: 10.1007/s00432-020-03381-w. Full text in Research Archive
• Luzon, Javier; Stimec, Bojan V.; Bakka, Arne Olav; Edwin, Bjørn & Ignjatovic, Dejan (2020). Value of the surgeon’s sightline on hologram registration and targeting in mixed reality. International Journal of Computer Assisted Radiology and Surgery. ISSN 1861-6410. 15, p. 2027–2039. doi: 10.1007/s11548-020-02263-3. Full text in Research Archive
• Agustdottir, Elin Edda; Stimec, Bojan V.; Strømmen, Tine Tveit; Sheikh, Ariba Ehsan; Elaiyarajah, Ilackiya & Lindstrøm, Jonas Christoffer [Show all 7 contributors for this article] (2020). Preventing chylous ascites after right hemicolectomy with D3 extended mesenterectomy. Langenbeck's Archives of Surgery. ISSN 1435-2443. 405, p. 1017–1024. doi: 10.1007/s00423-020-01938-4. Full text in Research Archive
• Nesgaard, Jens Marius; Stimec, Bojan V.; Bakka, Arne Olav; Edwin, Bjørn von Gohren; Bergamaschi, Roberto & Ignjatovic, Dejan (2019). Right colectomy with extended D3 mesenterectomy: Anterior and posterior to the mesenteric vessels. Surgical technology international. ISSN 1090-3941. 35, p. 1–5.
• Luzon, Javier; Kumar, Rahul Prasanna; Stimec, Bojan V.; Elle, Ole Jacob; Bakka, Arne Olav & Edwin, Bjørn [Show all 7 contributors for this article] (2019). Semi-automated vs. manual 3D reconstruction of central mesenteric vascular models: the surgeon’s verdict. Surgical Endoscopy. ISSN 0930-2794. p. 1–11. doi: 10.1007/s00464-019-07275-y.
• Augestad, Knut Magne; Butt, Khayam; Ignjatovic, Dejan; Keller, Deborah S. & Kiran, Ravi (2019). Video-based coaching in surgical education: a systematic review and meta-analysis. Surgical Endoscopy. ISSN 0930-2794. 34(2), p. 521–535. doi: 10.1007/s00464-019-07265-0.
• Thorsen, Yngve; Stimec, Bojan V.; Lindstrøm, Jonas Christoffer & Ignjatovic, Dejan (2019). The effect of vascular anatomy and gender on bowel function after right colectomy with extended D3-mesenterectomy. Annals of Laparoscopic and Endoscopic Surgery. ISSN 2518-6973. 4. doi: 10.21037/ales.2019.07.04.
• Næsgaard, Jens Marius; Stimec, Bojan V.; Edwin, Bjørn; Bakka, Arne Olav & Ignjatovic, Dejan (2019). CT and operative images for evaluation of right colectomy with extended D3 mesenterectomy anterior and posterior to the mesenteric vessels. European Surgery. ISSN 1682-8631. 52, p. 29–36. doi: 10.1007/s10353-019-0604-y.
• Næsgaard, Jens Marius; Stimec, Bojan Vladimir; Bakka, Arne Olav; Edwin, Bjørn; Ignjatovic, Dejan & Bergamaschi, Roberto (2019). Right Colectomy with Extended D3 Mesenterectomy: Anterior and Posterior to the Mesenteric Vessels. Surgical technology international. ISSN 1090-3941. 35, p. 138–142. doi: 10.1089/lap.2018.0059.
• Thorsen, Yngve; Stimec, Bojan Vladimir; Lindstrøm, Jonas Christoffer; Næsgaard, Jens Marius; Øresland, Tom & Ignjatovic, Dejan (2019). Bowel Motility After Injury to the Superior Mesenteric Plexus During D3 Extended Mesenterectomy. Journal of Surgical Research. ISSN 0022-4804. 239, p. 115–124. doi: 10.1016/j.jss.2019.02.004.
• Willard, Christer-Daniel; Kjæstad, Erik; Stimec, Bojan; Edwin, Bjørn; Ignjatovic, Dejan & Øresland, Tom [Show all 32 contributors for this article] (2018). Preoperative anatomical road mapping reduces variability of operating time, estimated blood loss, and lymph node yield in right colectomy with extended D3 mesenterectomy for cancer. International Journal of Colorectal Disease. ISSN 0179-1958. 34(1), p. 151–160. doi: 10.1007/s00384-018-3177-5.
• Willard, Christer-Daniel; Kjæstad, Erik; Stimec, Bojan V.; Edwin, Bjørn & Ignjatovic, Dejan (2018). Preoperative anatomical road mapping reduces variability of operating time, estimated blood loss, and lymph node yield in right colectomy with extended D3 mesenterectomy for cancer. International Journal of Colorectal Disease. ISSN 0179-1958. p. 1–10. doi: 10.1007/s00384-018-3177-5.
• Gaupset, Robin; Eftang, Lars Lohne; Langbach, Odd; Fridrich, Katrin; Borthne, Arne Sigmund & Geitung, Jonn Terje [Show all 9 contributors for this article] (2018). Improved Survival after Implementation of Multidisciplinary Team Meetings, Perioperative Chemotherapy, Extended Lymphnode Dissection and Laparoscopic Surgery in the Treatment of Advances Gastric Cancer. Journal of Cancer Therapy. ISSN 2151-1934. p. 106–117. doi: 10.4236/jct.2018.92012.
• Sahakyan, Mushegh; Kleive, Dyre; Kazaryan, Airazat M.; Aghayan, Davit; Ignjatovic, Dejan & Labori, Knut Jørgen [Show all 8 contributors for this article] (2018). Extended laparoscopic distal pancreatectomy for adenocarcinoma in the body and tail of the pancreas: a single-center experience. Langenbeck's Archives of Surgery. ISSN 1435-2443. p. 1–8. doi: 10.1007/s00423-018-1730-x.
• Luzon, Javier; Andersen, Bjarte Tidemann; Stimec, Bojan V.; Fasel, Jean H.D.; Bakka, Arne Olav & Kazaryan, Airazat M. [Show all 7 contributors for this article] (2018). Implementation of 3D printed superior mesenteric vascular models for surgical planning and/or navigation in right colectomy with extended D3 mesenterectomy: comparison of virtual and physical models to the anatomy found at surgery. Surgical Endoscopy. ISSN 0930-2794. p. 1–9. doi: 10.1007/s00464-018-6332-8.
• Stimec, Bojan V.; Andersen, Bjarte Tidemann; Benz, Stefan R.; Fasel, Jean H. D.; Augestad, Knut Magne & Ignjatovic, Dejan (2018). Retromesenteric course of the middle colic artery?challenges and pitfalls in D3 right colectomy for cancer. International Journal of Colorectal Disease. ISSN 0179-1958. 33(6), p. 771–777. doi: 10.1007/s00384-018-2987-9.
• You, Karen; Gachabayov, Mahir; Næsgaard, Jens Marius; Bandovic, Jela; Ignjatovic, Dejan & Bakka, Arne Olav [Show all 7 contributors for this article] (2018). D3 Extended Mesenterectomy in Right Colectomy for Cancer: A Cadaver Simulation Model. Surgical technology international. ISSN 1090-3941. 32, p. 109–113.
• Gaupset, Robin; Næsgaard, Jens Marius; Kazaryan, Airazat M.; Stimec, Bojan V.; Edwin, Bjørn & Ignjatovic, Dejan (2018). Introducing anatomically correct CT-guided laparoscopic right colectomy with D3 anterior posterior extended mesenterectomy: Initial experience and technical pitfalls. Journal of Laparoendoscopic and Advanced Surgical Techniques. ISSN 1092-6429. 28(10), p. 1174–1182. doi: 10.1089/lap.2018.0059.
• El-Hussuna, Alaa; Pinkney, Thomas; Zmora, Oded; Frasson, Murili Zomer; Bhangu, Aneel & Battersby, Nicholas J. [Show all 24 contributors for this article] (2018). Risk factors for unfavourable postoperative outcome in patients with Crohn’s disease undergoing right hemicolectomy or ileocaecal resection. An international audit by ESCP and S-ECCO . Colorectal Disease. ISSN 1462-8910. 20(3), p. 219–227. doi: 10.1111/codi.13889.
• Næsgaard, Jens Marius; Stimec, Bojan V.; Soulie, Pricilla; Edwin, Bjørn; Bakka, Arne Olav & Ignjatovic, Dejan (2018). Defining minimal clearances for adequate lymphatic resection relevant to right colectomy for cancer: a post-mortem study. Surgical Endoscopy. ISSN 0930-2794. 32(9), p. 3806–3812. doi: 10.1007/s00464-018-6106-3.
• Sahakyan, Mushegh; Haugvik, Sven-Petter; Røsok, Bård Ingvald; Kazaryan, Airazat M.; Ignjatovic, Dejan & Buanes, Trond [Show all 9 contributors for this article] (2018). Can standardized pathology examination increase the lymph node yield following laparoscopic distal pancreatectomy for ductal adenocarcinoma? HPB. ISSN 1365-182X. 20(2), p. 175–181. doi: 10.1016/j.hpb.2017.08.038.
• Sahakyan, Mushegh; Kim, Song Cheol; Kleive, Dyre; Kazaryan, Airazat M.; Song, Ki Byung & Ignjatovic, Dejan [Show all 10 contributors for this article] (2017). Laparoscopic distal pancreatectomy for pancreatic ductal adenocarcinoma: Long-term oncologic outcomes after standard resection. Surgery. ISSN 0039-6060. 162(4), p. 802–811. doi: 10.1016/j.surg.2017.06.009.
• Augestad, Knut Magne; Merok, Marianne Aarstad & Ignjatovic, Dejan (2017). Tailored treatment of colorectal cancer: Surgical, molecular, and genetic considerations. Clinical Medicine Insights: Oncology. ISSN 1179-5549. 11. doi: 10.1177/1179554917690766.
• Thorsen, Yngve; Stimec, Bojan V.; Næsgaard, Jens Marius & Ignjatovic, Dejan (2017). Detecting the Non-physiological, Surgically Tailored Ileocolic Anastomosis Using the Wireless Motility Capsule. A Pre- and Post-operative, Prospective, Within Subject Trial. Journal of Neurogastroenterology and Motility. ISSN 2093-0879. 23(4), p. 585–591. doi: 10.5056/jnm16190. Full text in Research Archive
• Sahakyan, Mushegh; Edwin, Bjørn; Kazaryan, Airazat M.; Barkhatov, Leonid; Buanes, Trond & Ignjatovic, Dejan [Show all 8 contributors for this article] (2017). Perioperative outcomes and survival in elderly patients undergoing laparoscopic distal pancreatectomy. Journal of Hepato-Biliary-Pancreatic Sciences. ISSN 1868-6974. 24(1), p. 42–48. doi: 10.1002/jhbp.409.
• Næsgaard, Jens Marius; Stimec, Bojan V.; Bakka, Arne Olav; Edwin, Bjørn & Ignjatovic, Dejan (2017). Navigating the mesentery: Part II. Vascular abnormalities and a review of the literature. Colorectal Disease. ISSN 1462-8910. 19(7), p. 656–666. doi: 10.1111/codi.13592.
• Nesgaard, Jens Marius; Stimec, Bojan V.; Bakka, Arne Olav; Edwin, Bjørn & Ignjatovic, Dejan (2016). Navigating the mesentery: part II. Vascular abnormalities and a review of the literature . Colorectal Disease. ISSN 1462-8910. 19, p. 656–666. doi: 10.1111/codi.13592.
• Sahakyan, Mushegh; Røsok, Bård Ingvald; Kazaryan, Airazat M.; Barkhatov, Leonid; Lai, Xiaoran & Kleive, Dyre [Show all 9 contributors for this article] (2016). Impact of obesity on surgical outcomes of laparoscopic distal pancreatectomy: A Norwegian single-center study. Surgery. ISSN 0039-6060. 160(5), p. 1271–1278. doi: 10.1016/j.surg.2016.05.046. Show summary

  Background Obesity is known as a risk factor for intra- and postoperative complications in pancreatic operation. However, the operative outcomes in obese patients undergoing laparoscopic distal pancreatectomy remain unclear. Methods A total number of 423 patients underwent laparoscopic distal pancreatectomy at Oslo University Hospital-Rikshospitalet from April 1997 to December 2015. Patients were categorized into 3 groups based on the body mass index: normal weight (18.5–24.9 kg/m2), overweight (25–29.9 kg/m2), and obese (≥30 kg/m2). After excluding underweight patients, 402 patients were enrolled in this study. Results Obese patients had significantly longer operative time and increased blood loss compared with overweight and normal weight patients (190 [61–480] minutes vs 158 [56–520] minutes vs 153 [29–374] minutes, P = .009 and 200 [0–2,800] mL vs 50 [0–6250] mL vs 90 [0–2,000] mL, P = .01, respectively). A multiple linear regression analysis identified obesity as predictive of prolonged operative time and increased blood loss during laparoscopic distal pancreatectomy. The rates of clinically relevant pancreatic fistula and severe complications (≥grade III by Accordion classification) were comparable in the 3 groups (P = .23 and P = .37, respectively). A multivariate logistic regression model did not demonstrate an association between obesity and postoperative morbidity (P = .09). The duration of hospital stay was comparable in the 3 groups (P = .13). Conclusion In spite of longer operative time and greater blood loss, laparoscopic distal pancreatectomy in obese patients is associated with satisfactory postoperative outcomes, similar to those in normal weight and overweight patients. Hence, laparoscopic distal pancreatectomy should be equally considered both in obese and nonobese patients.

• Stimec, Bojan V.; Rakocevic, Zoran; Ignjatovic, Dejan & Fasel, Jean H D (2016). Planimetric correlation between the submandibular glands and the pancreas: a postmortem ductographic study. Anatomical Science International. ISSN 1447-6959. 93(1), p. 114–118. doi: 10.1007/s12565-016-0382-6.
• Sahakyan, Mushegh; Røsok, Bård Ingvald; Kazaryan, Airazat M.; Barkhatov, Leonid; Haugvik, Sven-Petter & Fretland, Åsmund Avdem [Show all 9 contributors for this article] (2016). Role of laparoscopic enucleation in the treatment of pancreatic lesions: case series and case-matched analysis. Surgical Endoscopy. ISSN 0930-2794. Published ahead of print, p. 1–7. doi: 10.1007/s00464-016-5233-y.
• Thorsen, Yngve; Stimec, Bojan V.; Andersen, Solveig Norheim; Lindstrøm, Jonas Christoffer; Pfeffer, Frank & Øresland, Tom [Show all 8 contributors for this article] (2016). Bowel function and quality of life after superior mesenteric nerve plexus transection in right colectomy with D3 extended mesenterectomy. Techniques in Coloproctology. ISSN 1123-6337. p. 1–9. doi: 10.1007/s10151-016-1466-y. Full text in Research Archive
• Sahakyan, Mushegh; Kazaryan, Airazat M.; Rawashdeh, Majd; Fuks, David; Shmavonyan, Mark & Haugvik, Sven-Petter [Show all 14 contributors for this article] (2015). Laparoscopic distal pancreatectomy for pancreatic ductal adenocarcinoma: results of a multicenter cohort study on 196 patients. Surgical Endoscopy. ISSN 0930-2794. p. 1–10. doi: 10.1007/s00464-015-4623-x.
• Stimec, Bojan V.; Fasel, J H D & Ignjatovic, Dejan (2015). 3D reconstruction of a primary aortoenteric fistula – centerline calculation and measurements. Current Medical Imaging. ISSN 1573-4056. 11(2), p. 127–131. doi: 10.2174/157340561102150624143610.
• Næsgaard, Jens Marius; Stimec, Bojan V.; Bakka, Arne Olav; Edwin, Bjørn & Ignjatovic, Dejan (2015). Navigating the mesentery: A comparative pre- and per-operative visualization of the vascular anatomy. Colorectal Disease. ISSN 1462-8910. 17(9), p. 810–818. doi: 10.1111/codi.13003.
• Chen, Ying; Hansen, Kristine Eraker Aasland; Spasojevic, Milan; Næsgaard, Jens Marius & Ignjatovic, Dejan (2014). The impact of mesh fixation with a collagen-fibrin sealant in a murine ventral hernia model. Surgical laparoscopy, endoscopy & percutaneous techniques. ISSN 1530-4515. 24(2), p. 140–144. doi: 10.1097/SLE.0b013e31828fbf5e.
• Spasojevic, Milan; Stimec, Bojan V.; Dyrbekk, Anne Pernille; Tepavcevic, Zvezdana; Edwin, Bjørn & Bakka, Arne Olav [Show all 7 contributors for this article] (2013). Lymph Node Distribution in the D3 Area of the Right Mesocolon: Implications for an Anatomically Correct Cancer Resection. A Postmortem Study. Diseases of the Colon & Rectum. ISSN 0012-3706. 56(12), p. 1381–1387. doi: 10.1097/01.dcr.0000436279.18577.d3.
• Kiil, Steinar; Stimec, Bojan V.; Spasojevic, Milan; Fasel, J H D & Ignjatovic, Dejan (2013). 3D for D3: Role of Imaging for Right Colectomy in a Case with Congenital Superior Mesenteric Vein Aneurysm and Co-Existing Anomalous Irrigation. Chirurgia. ISSN 1221-9118. 108(2), p. 256–258.
• Stimec, Bojan V.; Grønvold, Lars; Ignjatovic, Dejan & Fasel, J H D (2012). Gastric varices without portal hypertension: role of left inferior vena cava? JBR - BTR. ISSN 1780-2393. 95(5), p. 302–305. doi: 10.5334/jbr-btr.656.
• Spasojevic, Milan; Næsgaard, Jens Marius & Ignjatovic, Dejan (2012). Perforated midgut diverticulitis: Revisited. World Journal of Gastroenterology (WJG). ISSN 1007-9327. 18(34), p. 4714–4720. doi: 10.3748/wjg.v18.i34.4714.
• Grønvold, Lars; Spasojevic, Milan; Næsgaard, Jens Marius & Ignjatovic, Dejan (2012). Single-incision Laparoscopic Versus Conventional Laparoscopic Ventral Hernia Repair: A Comparison of Short-term Surgical Results. Surgical laparoscopy, endoscopy & percutaneous techniques. ISSN 1530-4515. 22(4), p. 354–357. doi: 10.1097/SLE.0b013e318257cefc.
• Larssen, Kristian Stritesky; Stimec, Bojan; Takvam, Jon Anders & Ignjatovic, Dejan (2012). Role of imaging in gastric volvulus: Stepwise approach in three cases. The Turkish Journal of Gastroenterology. ISSN 1300-4948. 23(4), p. 390–393. doi: 10.4318/tjg.2012.0418. Show summary

  In this paper, we present three cases of gastric volvulus who were admitted to our hospital over one year, focusing on the diagnostic process. By comparing the cases, we present diagnostic points and endoscopic findings that should trigger suspicion and lead to a prompt diagnosis by computed tomography, thus enabling surgery at a time before necrosis of the stomach is present. A literature review is also presented.

• Spasojevic, Milan; Stimec, Bojan V.; Grønvold, Lars; Næsgaard, Jens Marius; Edwin, Bjørn & Ignjatovic, Dejan (2011). The Anatomical and Surgical Consequences of Right Colectomy for Cancer. Diseases of the Colon & Rectum. ISSN 0012-3706. 54(12), p. 1503–1509. doi: 10.1097/DCR.0b013e318232116b.
• Spasojevic, Milan; Stimec, Bojan V.; Fasel, J.F.; Terraz, Sylvain & Ignjatovic, Dejan (2011). 3D relations between right colon arteries and the superior mesenteric vein: a preliminary study with multidetector computed tomography. Surgical Endoscopy. ISSN 0930-2794. 25(6), p. 1883–1886. doi: 10.1007/s00464-010-1480-5.
• Ignjatovic, Dejan; Spasojevic, Milan & Stimec, Bojan (2010). Can the gastrocolic trunk of Henle serve as an anatomical landmark in laparoscopic right colectomy? A postmortem anatomical study. American Journal of Surgery. ISSN 0002-9610. 199(2), p. 249–254. doi: 10.1016/j.amjsurg.2009.03.010.
• Ignjatovic, Dejan; Hansen, Kristine Eraker Aasland; Pettersen, Marianne; Sund, Bjørn Ståle; Chen, Ying & Spasojevic, Milan [Show all 7 contributors for this article] (2010). Intra-abdominal administration of bevacizumab diminishes intra-peritoneal adhesions. American Journal of Surgery. ISSN 0002-9610. 200(2), p. 270–275. doi: 10.1016/j.amjsurg.2009.08.038.

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• Luzon, Javier; Andersen, Bjarte Tidemann; Stimec, Bojan V.; Fasel, Jean H. D.; Bakka, Arne Olav & Kazaryan, Airazat M. [Show all 7 contributors for this article] (2024). Correction to: Implementation of 3D printed superior mesenteric vascular models for surgical planning and/or navigation in right colectomy with extended D3 mesenterectomy: comparison of virtual and physical models to the anatomy found at surgery (Surgical Endoscopy, (2019), 33, 2, (567-575), 10.1007/s00464-018-6332-8). Surgical Endoscopy. ISSN 0930-2794. 38(4). doi: 10.1007/s00464-024-10751-9.
• Andersen, Bjarte Tidemann; Kazaryan, Airazat M.; Stimec, Bojan V. & Ignjatovic, Dejan (2023). The Long Tale of the Famous Herr Toldt and the Less Known Monsieur Fredet. Diseases of the Colon & Rectum. ISSN 0012-3706. doi: 10.1097/DCR.0000000000002868.
• Andersen, Bjarte Tidemann; Kazaryan, Airazat M.; Stimec, Bojan V. & Ignjatovic, Dejan (2023). The Long Tale of the Famous Herr Toldt and the Less-Known Monsieur Fredet. Diseases of the Colon & Rectum. ISSN 0012-3706. 66(6). doi: 10.1097/DCR.0000000000002868.
• Stimec, Bojan V. & Ignjatovic, Dejan (2022). Salivary gland and pancreas – Gross anatomy, as well. Acta Histochemica. ISSN 0065-1281. 124(7). doi: 10.1016/j.acthis.2022.151957.
• Luzon, Javier; Ignjatovic, Dejan & Stimec, Bojan V. (2022). Letter to the editor concerning the article “Anatomy of the neural fibers at the superior mesenteric artery-a cadaver study”. Langenbeck's Archives of Surgery. ISSN 1435-2443. 407, p. 3161–3162. doi: 10.1007/s00423-022-02644-z.
• Andersen, Bjarte Tidemann; Kazaryan, Airazat M.; Stimec, Bojan V.; Edwin, Bjørn von Gohren; RANCINGER, PETER IVAN & Ignjatovic, Dejan (2022). Personalized surgery for the splenic flexure cancer: new frontiers. British Journal of Surgery. ISSN 0007-1323. 109(9), p. 880–881. doi: 10.1093/bjs/znac153.
• Næsgaard, Jens Marius; Stimec, Bojan V. & Ignjatovic, Dejan (2022). Comments on Superior Mesenteric Artery First Approach for Right Colectomy. Annals of Surgical Oncology. ISSN 1068-9265. doi: 10.1245/s10434-022-12161-4.
• Ignjatovic, Dejan & Stimec, Bojan V. (2022). More Than Lymph Node Dissection Has an Effect on Overall Survival For Right Colon Cancer. Diseases of the Colon & Rectum. ISSN 0012-3706. 65(1). doi: 10.1097/DCR.0000000000002313.
• Ignjatovic, Dejan & Stimec, Bojan V. (2018). Comment to jejunal diverticulitis mimicking small bowel perforation: Case report and review of the literature. Chirurgia. ISSN 1221-9118. 113(5), p. 719–719. doi: 10.21614/chirurgia.113.5.719.
• Ignjatovic, Dejan & Bergamaschi, Roberto (2016). Defining the extent of mesenterectomy in right colectomy: a controversy. Colorectal Disease. ISSN 1462-8910. 18(7), p. 649–649. doi: 10.1111/codi.13369.
• Spasojevic, Milan; Kiil, Steinar; Stimec, Bojan V. & Ignjatovic, Dejan (2012). Reply to: Right hemicolectomy with central vascular ligation in colon cancer. Surgical Endoscopy. ISSN 0930-2794. 26(2), p. 588–589. doi: 10.1007/s00464-011-1892-x.
• Shafique, M. & Ignjatovic, Dejan (2012). Splenic lobe/segment dearterialization. Techniques in Coloproctology. ISSN 1123-6337. 16(6), p. 471–471. doi: 10.1007/s10151-012-0868-8.
• Ignjatovic, Dejan & Bergamaschi, Roberto (2007). New procedure for purse-string suture in thoracoscopic esophagectomy with intrathoracic anastomosis. Surgical Endoscopy. ISSN 0930-2794. 21(8), p. 1288–1288. doi: 10.1007/s00464-006-9078-7.
• Ignjatovic, Dejan (2007). A 3-D post-mortem model provides rationale for complications in gastrointestinal surgery. Universitetet i Bergen.

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