Acquired non-neoplastic anomalies
Collagen polyp

Author: Alcides Chaux, M.D. (see Authors page)

Revised: 15 March 2016, last major update March 2011

Copyright: (c) 2003-2016,, Inc.

PubMed Search: Collagen polyp
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
Micro Description
  • Polypoid lesions show submucosal accumulation of eosinophilic, homogeneous, poorly cellular material (Mod Pathol 1999;12:1090)
Positive Stains
  • Trichrome (strong), PAS (weak)