肝脾腸間膜動脈幹を形成する破格2例

Abstract

The present report describes two anomalous cases involving hepato-lieno-mesenteric trunk at the dissection for education of medical students in 1992. The first case (A) was found in a 53-year-old Japanese woman and the second case (B) in a 79-year-old Japanese man. The left gastric artery arises directly from the abdominal aorta and then gives off the inferior phrenic artery. The splenic, common hepatic and superior mesenteric arteries form a so-called hepato-lieno-mesenteric trunk. In the first case (A), the three arteries arise from the hepato-lieno-mesenteric trunk in the order of superior mesenteric, splenic and common hepatic arteries. In the second case (B), the hepato-lieno-mesenteric trunk divides into superior mesenteric artery and hepato-splenic trunk, which joins into the common hepatic and splenic arteries. These two cases belong to Type Ⅲ of Adachi's classification (1928), and to Type Ⅱ' of Morita's classification (1953).