The supraduodenal artery.

The present work deals with a study of the supraduodenal a. in 30 specimens. It was present in 28 cases: when absent it was substituted by the right gastric a. Its origin is discussed, the most frequent being the gastroduodenal a., with 2 cases in the pericholedochal plexus. Distribution to the distal two thirds of the upper portion of the duodenum was constant, extending to the supra- and retroduodenal portions of the common duct. Its anastomosis with the gastric right a. and the posterior superior pancreaticoduodenal a. was established in half the cases, being more frequent with the former.