PMID- 31198809 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200929 IS - 2322-2522 (Print) IS - 2322-3960 (Electronic) IS - 2322-2522 (Linking) VI - 7 IP - 2 DP - 2019 Apr TI - Arc of Buhler Pseudoaneurysm Causing Fatal Retroperitoneal Hemorrhage; A Rare Case Report and Discussion of Relevant Literature. PG - 183-186 LID - 10.29252/beat-070215 [doi] AB - Identification of any variant anatomy prior to surgery is as essential as having knowledge of normal anatomy. These surprises bring on many challenges along with as they can be fatal. We encountered a case of patient who succumbed down to an unrecognized rare mesenteric vasculature variant known as "Arc of Buhler" (AOB) which is a persistent embryonic ventral anastomosis between the Celiac trunk and the Superior mesenteric artery. It is usually asymptomatic and found incidentally after evaluation for other pathologies. We herein report a pseudoaneurysm of Arc of Buhler being surgically managed after massive retroperitoneal hemorrhage. Unfortunately, the patient did not survive the procedure and passed away. AOB aneurysms present formidable risks to patients and diagnostic and therapeutic challenges to physicians. They are rare and require high index of suspicion on radiographic imaging. Present case reports underscore the importance of identifying it and treating it regardless of the size. FAU - Biswas, Saptarshi AU - Biswas S AD - Department of Trauma and Acute Care Surgery, Forbes Hospital, Allegheny Health Network, Pennsylvania. USA. FAU - Gogna, Shekhar AU - Gogna S AD - Department of General Surgery, Westchester University Medical Center, Valhalla, New York, USA. LA - eng PT - Case Reports PL - Iran TA - Bull Emerg Trauma JT - Bulletin of emergency and trauma JID - 101614018 PMC - PMC6555205 OTO - NOTNLM OT - Arc of Buhler (AOB) OT - Fatal hemorrhage OT - Pseudoaneurysm OT - Retroperitoneum COIS- None declared. EDAT- 2019/06/15 06:00 MHDA- 2019/06/15 06:01 PMCR- 2019/04/01 CRDT- 2019/06/15 06:00 PHST- 2019/06/15 06:00 [entrez] PHST- 2019/06/15 06:00 [pubmed] PHST- 2019/06/15 06:01 [medline] PHST- 2019/04/01 00:00 [pmc-release] AID - 10.29252/beat-070215 [doi] PST - ppublish SO - Bull Emerg Trauma. 2019 Apr;7(2):183-186. doi: 10.29252/beat-070215.