Background: Ruptured aneurysm of the middle colic artery is very rare. Its concomitance with isolated dissection of the superior mesenteric artery (SMAD) has not yet been reported in the literature.
Case report: A previously well 56-year-old man was referred to our hospital with acute-onset pain throughout the entire abdomen. A ruptured aneurysm of the middle colic artery and isolated SMAD were revealed using a computed tomography (CT) scan. Coil embolization was successfully performed for a ruptured aneurysm of the middle colic artery. During the immediate postprocedural period, the patient had ischemic colitis, but he recovered in a few days with conservative treatment. Close observation was elected to address the SMAD because the condition was not thought to be responsible for any symptoms. The CT scan followed after 2 years showed no change in SMAD.
Conclusions: We successfully performed endovascular treatment for a ruptured aneurysm of the middle colic artery. For the incidentally detected SMAD, close observational management was chosen.
Keywords: coil embolization; endovascular therapy; middle colic artery aneurysm rupture; superior mesenteric artery dissection.