The surgical specimen. (A) A solid tumor measuring 25 × 30 × 25 mm in size was found at the papilla of Vater which was lobulated and covered by attenuated mucosa with ulcer formation at the center of elevation. (B) The section of the tumor extending from the mucosa to submucosa of the duodenum was sharply demarcated, solid, and white-yellowish.
Okubo et al. Diagnostic Pathology 2010 5:27 doi:10.1186/1746-1596-5-27