Bladder
Acquired non-neoplastic anomalies
Collagen polyp



Topic Completed: 1 March 2011

Revised: 14 December 2018

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PubMed Search: Collagen polyp
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Cite this page: Chaux A Collagen polyp. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/bladdercollagenpolyp.html. Accessed March 20th, 2019.
Definition / general
  • Polyp secondary to collagen injection to control urinary stress incontinence or improve function of urinary pouches (Urology 1999;54:815)
Epidemiology
  • 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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