Bladder
Nonurothelial benign tumors
Urachal lesions - benign

Author: Monika Roychowdhury, M.D. (see Authors page)

Revised: 22 June 2016, last major update December 2014

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

PubMed Search: Bladder urachal lesions
Definition / General
  • Benign lesions originating from urachus; most common is urachal cyst (Yonsei Med J 2006;47:782)
  • See also patent urachus
Etiology
  • Persistent urachal remnants is common; clinically important when infected, dilated or neoplastic
Case Reports
Treatment
  • Complete surgical excision to prevent malignant transformation
Clinical Images

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Urachal cysts and fistulas

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Urachal cysts - sinus tract between bladder dome and umbilicus

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Infected urachal cyst

Gross Images

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Infected urachal cyst and fibrous tract

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Urachal cyst containing stones

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Urachal sigmoid fistula

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Inflamed urachal cyst

Micro Description
  • Urachal cysts are lined by urothelium, cuboidal, flat or atrophic cells
Micro Images

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AFIP Fig 2-79: Urachal cyst