Bicameral coeliacomesenteric aneurysm
Ambulatory CT for the investigation of pancreatic cancer.
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Hypodense pancreatic body mass measuring 3.2 X 2.2 X 2.1 cm with a small cystic component. Mildly dilated main pancreatic duct and intra- and extrahepatic bile ducts. No evidence of regional lymph node or hepatic spread.
Hypodense (fluid density) anterior part of the caudate lobe (segment I) of the liver, perhaps focal fatty infiltration.
The gallbladder has been removed.
Small parapelvic renal cysts bilaterally.
Multiple uterine leiomyomas, many of which are calcified.
Coeliacomesenteric trunk with a bicameral aneurysm measuring 4.5 cm (AP) X 3.4 cm altogether, its anterior chamber thrombosed and peripherally calcified. All the main branches originate from the posterior chamber.
The abdominal aorta, particularly its infrarenal part, shows soft and calcified atheromatous plaque.
A common coeliacomesenteric trunk, i.e. a common origin shared by the coeliac artery and superior mesenteric artery, is a rare variant. This case demonstrates an incidental finding within a finding: a coeliacomesenteric trunk with a bicameral (double chamber) aneurysm whose anterior chamber is thrombosed.