Small bowel (small intestine)
Benign tumors and tumor-like conditions

Author: Hanni Gulwani, M.D. (see Authors page)

Revised: 15 February 2018, last major update August 2012

Copyright: (c) 2003-2018,, Inc.

PubMed Search: Amyloidosis[TI] small bowel[mh] full text[sb]

Cite this page: Gulwani, H. Amyloidosis. website. Accessed October 19th, 2018.
Definition / general
  • Rare in duodenum (Int J Clin Exp Pathol 2012;5:46)
  • Typically diagnosed with rectal biopsy that includes submucosa
  • Primary: GI involvement in 70% of cases, amyloid in blood vessel walls and muscularis propria
  • Secondary: GI involvement in 50% of cases, often deposits in blood vessel walls in lamina propria
Microscopic (histologic) images

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Amyloidosis of duodenum