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inverted urothelial papilloma

Sunday 30 September 2012

urothelial inverted papilloma

Definition: Inverted papilloma of the urinary bladder is rare, accounting for < 1% of all bladder neoplasms. Although there is general consensus that inverted papilloma is benign in nature, little is known about its pathogenesis.

Images

- Inverted urothelial papilloma - anastomosing cords of urothelium, cytologically bland, peripheral palisading

Digital images

- JRC:2819 : Bladder inverted papilloma (56 y M. Gross painless hematuria)

Localization

- vesical inverted papilloma (bladder inverted papilloma)

Etiology

- Not linked to Human Papillomavirus (HPV) (23681080)

References

- Human Papillomavirus is Not an Etiologic Agent of Urothelial Inverted Papillomas. Alexander RE, Davidson DD, Lopez-Beltran A, Montironi R, Maclennan GT, CompĂ©rat E, Idrees MT, Emerson RE, Cheng L. Am J Surg Pathol. 2013 May 15. PMID: 23681080