Small intestine & ampulla
Benign tumors / tumor-like conditions
Reactive nodular fibrous pseudotumor

Topic Completed: 1 August 2012

Minor changes: 13 March 2019

Copyright: 2003-2019,, Inc.

PubMed Search: Reactive nodular fibrous pseudotumor

Hanni Gulwani, M.B.B.S.
Page views in 2019: 421
Page views in 2020 to date: 341
Cite this page: Gulwani H. Reactive nodular fibrous pseudotumor. website. Accessed August 10th, 2020.
Definition / general
Gross description
  • Firm, tan white, 4 - 6 cm, solitary / multiple, in small bowel or colon
Microscopic (histologic) description
  • Low / moderate cellularity
  • Spindled fibroblasts arranged haphazardly or in intersecting fascicles
  • Often infiltrative borders
  • Stroma rich in wire-like, keloidal or hyalinized collagen
  • Peripheral lymphoid aggregates
Negative stains
Differential diagnosis
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