Acquired non-neoplastic anomalies
Collagen polyp

Topic Completed: 1 March 2011

Revised: 14 December 2018

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

PubMed Search: Collagen polyp

Alcides Chaux, M.D.
Page views in 2019: 341
Page views in 2020 to date: 122
Cite this page: Chaux A Collagen polyp. website. Accessed May 27th, 2020.
Definition / general
  • Polyp secondary to collagen injection to control urinary stress incontinence or improve function of urinary pouches (Urology 1999;54:815)
  • Very unusual complication of periurethral collagen injection
Microscopic (histologic) description
  • Polypoid lesions show submucosal accumulation of eosinophilic, homogeneous, poorly cellular material (Mod Pathol 1999;12:1090)
Positive stains
  • Trichrome (strong), PAS (weak)
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