Nonurothelial benign tumors
Urachal lesions - benign

Topic Completed: 1 December 2014

Revised: 20 December 2018

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

PubMed Search: Bladder urachal lesions

Monika Roychowdhury, M.D.
Page views in 2018: 3,589
Page views in 2019 to date: 1,921
Cite this page: Roychowdhury M Urachal lesions - benign. website. Accessed June 17th, 2019.
Definition / general
  • Benign lesions originating from urachus; most common is urachal cyst (Yonsei Med J 2006;47:782)
  • See also patent urachus
  • Persistent urachal remnants is common; clinically important when infected, dilated or neoplastic
Case reports
  • 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

Microscopic (histologic) description
  • Urachal cysts are lined by urothelium, cuboidal, flat or atrophic cells
Microscopic (histologic) images

AFIP Fig 2-79: Urachal cyst

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