Giant dissecting aneurysm of the superior mesenteric artery with distal branch involvement and true lumen collapse: a case report - Report - MDSpire

Giant dissecting aneurysm of the superior mesenteric artery with distal branch involvement and true lumen collapse: a case report

  • By

  • Chuwen Chen

  • Yiyuan Li

  • Bin Huang

  • Xiyang Chen

  • June 9, 2026

  • 0 min

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Giant Dissecting Aneurysm of the Superior Mesenteric Artery: A Case Study

Overview

This report details the surgical management of a giant isolated superior mesenteric artery dissecting aneurysm (ISMADA) in a 70-year-old male patient. The case highlights the importance of timely intervention to prevent rupture and subsequent complications.

Background

Isolated superior mesenteric artery dissection is a rare but potentially life-threatening condition that can lead to serious complications such as rupture and hemorrhage. Early detection and appropriate management are crucial, especially in symptomatic cases. The increasing use of advanced imaging techniques has improved the recognition of this condition, emphasizing the need for awareness among healthcare professionals.

Data Highlights

ParameterValue
Patient Age70 years
Aneurysm Size4.8 cm
Postoperative RecoveryDischarged on day 8
Follow-up Duration30 months
Postoperative StatusAsymptomatic

Key Findings

  • ISMADA is rare, with a prevalence of approximately 0.075% based on autopsy data.
  • Most cases are reported in middle-aged and elderly men, particularly from East Asia.
  • Symptoms often include sudden-onset abdominal pain, with some patients remaining asymptomatic.
  • Conservative management is recommended for uncomplicated cases, while surgical intervention is necessary for complex presentations.
  • The case highlights the importance of hybrid surgical approaches in managing complicated ISMADA with true lumen compromise.

Clinical Implications

Healthcare professionals should maintain a high index of suspicion for ISMADA in patients presenting with abdominal pain, particularly in older males. Timely imaging and intervention can prevent serious complications such as rupture and bowel ischemia.

Conclusion

This case underscores the critical nature of prompt diagnosis and intervention in managing giant ISMADA. Surgical repair remains essential in complex cases to ensure patient safety and recovery.

Related Resources & Content

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  5. Dissection of mesenteric artery (Concept Id: C4049945) - MedGen - NCBI
  6. Role of Imaging Classification in Guiding Treatment Strategies for Spontaneous Isolated Superior Mesenteric Artery Dissection: A Comparative Study of Conservative and Endovascular Approaches - PubMed
  7. Frontiers | The treatment of challenging visceral and peripheral arterial aneurysms with flow diversion—a German multicentric observational study
  8. Dissection of mesenteric artery (Concept Id: C4049945) - MedGen - NCBI
  9. Role of Imaging Classification in Guiding Treatment Strategies for Spontaneous Isolated Superior Mesenteric Artery Dissection: A Comparative Study of Conservative and Endovascular Approaches - PubMed
  10. Frontiers | The treatment of challenging visceral and peripheral arterial aneurysms with flow diversion—a German multicentric observational study

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