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


Topic Completed: 1 August 2012

Minor changes: 19 April 2021

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PubMed Search: Reactive nodular fibrous pseudotumor

Hanni Gulwani, M.B.B.S.
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Cite this page: Gulwani H. Reactive nodular fibrous pseudotumor. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/smallbowelreactivenodular.html. Accessed May 15th, 2021.
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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