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Updated: Nov 23, 2025

Multimodality Diagnosis of Mesenteric Ischemia
Published on: July 21, 2023
Peripheral Inflammatory Superior Mesenteric Artery Aneurysm Diagnosed by Intraoperative and Histological Findings: A
Yasuo Suehiro1, Hiroyuki Seo1, Yuko Kubota1
1Department of Cardiovascular Surgery, Osaka Saiseikai Noe Hospital, Osaka, Osaka, Japan.
Abstract:
Although rare, superior mesenteric artery aneurysms (SMAAs) are life-threatening due to their high rupture rate. We herein report a case involving an 80-year-old man who presented with acute cholecystitis and who was incidentally found to have a 36-mm peripheral SMAA. A surgical intervention was performed, involving resection of the SMAA and reconstruction of the superior mesenteric artery (SMA) using an autologous vein graft. Intraoperative and histological findings indicated an inflammatory aneurysm, and the postoperative course was uneventful. We believe that resection of the aneurysm and reconstruction of the SMA is the preferred procedure for SMAAs to maintain adequate mesenteric circulations.
Insights
Superior mesenteric artery aneurysms (SMAAs) are rare but dangerous. This case study details successful surgical repair of a 36-mm SMAA using an autologous vein graft, preserving mesenteric circulation.
Area of Science:
- Vascular Surgery
- Gastrointestinal Surgery
- Medical Case Reports
Background:
- Superior mesenteric artery aneurysms (SMAAs) are uncommon vascular lesions.
- SMAAs carry a significant risk of rupture and associated mortality.
- Prompt diagnosis and management are crucial for favorable outcomes.
Purpose of the Study:
- To report a case of incidentally discovered superior mesenteric artery aneurysm (SMAA).
- To describe the surgical management of a peripheral SMAA.
- To emphasize the importance of preserving mesenteric circulation during SMAA repair.
Main Methods:
- A case of an 80-year-old male presenting with acute cholecystitis is described.
- Incidental finding of a 36-mm peripheral superior mesenteric artery aneurysm (SMAA).
- Surgical intervention involved SMAA resection and autologous vein graft reconstruction of the superior mesenteric artery (SMA).
Main Results:
- Intraoperative and histological findings confirmed an inflammatory aneurysm.
- The patient experienced an uneventful postoperative recovery.
- Successful preservation of mesenteric blood flow was achieved.
Conclusions:
- Surgical resection and reconstruction is the preferred treatment for SMAAs.
- Autologous vein grafting is a viable option for SMA reconstruction.
- Maintaining adequate mesenteric circulation is paramount after SMAA repair.
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