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Updated: Sep 20, 2025

Multimodality Diagnosis of Mesenteric Ischemia
Published on: July 21, 2023
Isolated Superior Mesenteric Artery Dissection: A Rare Etiology of Colic Ischemia
Kosisochukwu J Ezeh1, Shannay E Bellamy1
1Internal Medicine, Jersey City Medical Center, Jersey City, USA.
Insights
Isolated superior mesenteric artery dissection is a rare but deadly condition. This case highlights conservative management with anticoagulation as a successful treatment option for this rare vascular emergency.
Area of Science:
- Vascular Surgery
- Gastroenterology
- Radiology
Background:
- Superior mesenteric artery (SMA) dissection is a rare condition with high mortality.
- The underlying pathophysiology of isolated SMA dissection remains poorly understood.
- Prompt diagnosis and appropriate management are crucial for patient outcomes.
Observation:
- A 68-year-old male with pre-existing coronary artery disease presented with acute right-sided abdominal pain.
- Computed tomography arteriogram revealed a short segmental dissection of the SMA.
- The patient had a history of evaluation for coronary artery bypass surgery (CABG).
Findings:
- Conservative management with anticoagulation was initiated by the vascular surgery team.
- The patient experienced resolution of abdominal pain following treatment.
- Follow-up imaging demonstrated resolution of previously noted colitis changes.
Implications:
- This case underscores the importance of considering isolated SMA dissection in patients with acute abdominal pain, even with concurrent cardiac conditions.
- Conservative management may be a viable option for select patients with SMA dissection.
- Increased awareness of this rare entity can improve diagnostic accuracy and patient management strategies.
Abstract:
Although isolated superior mesenteric artery dissection is a rare disease entity, it possesses high mortality. The pathophysiology remains a mystery. In this case, we report a 68-year-old male with compromised coronary circulation been evaluated for coronary artery bypass surgery (CABG) and who developed a sudden, localized, right-sided abdominal pain. It was diagnosed on a computer tomography arteriogram (CTA), revealing a short segmental dissection involving the superior mesenteric artery (SMA). Vascular surgery was consulted and the decision was made to conservatively manage this patient's condition with anticoagulation. He was seen subsequently in the outpatient setting with a resolution of abdominal pain and a repeat computer tomography scan of the abdomen revealed resolution of previously seen colitis changes. Abdominal discomfort is a common complaint for which patients are seen in a variety of therapeutic settings, it is critical to bring attention to this case in order to raise awareness of the possibility of isolated SMA dissection as one of the underlying causes.
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