CLINICAL NOTES:
Ampullary mass.
MACROSCOPIC DESCRIPTION:
"Ampullar mass Bx": Multiple pieces of tan tissue 5mm in aggregate.
A1. (TWR)
MICROSCOPIC DESCRIPTION:
Sections show fragments of small bowel mucosa, some including
muscularis mucosae. Several fragments include infiltrating cords of
cells and small nests within fibromuscular stroma. Tumour cells show
large hyperchromatic pleomorphic nuclei and mitotic figures are
present. There is some luminal necrosis. In a few fragments the
surface epithelium shows features of low and high grade intestinal
dysplasia.
DIAGNOSIS:
Ampullary mass, biopsies: Adenocarcinoma arising from a duodenal
tubulovillous adenoma.