Urachal remnant

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Urachal remnant is a benign congenital abnormality that occasionally becomes symtpomatic.

It includes:[1]

  • Urachal cyst.
  • Urachal diverticulum.
  • Patent urachus.

General

  • Benign.
  • Often asymptomatic.
  • May become inflamed and be symptomatic.
    • Can cause "fever of unknown origin".[2]
  • Common in adults - possibly up to 30% of population.[3]

Gross

Microscopic

Features:[5]

  • Cuboidal[4] or urothelial lining.
    • May have a columnar lining.
  • Fibrous wall.
  • +/-Goblet cells.[3]

Notes:

  • ‡ Goblet cells tend to be older individuals. Urothelial lining typical for individuals <20 years old.[3]

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LESION ("URACHAL REMNANT"), EXCISION:
- CYST WITH BENIGN SIMPLE CUBOIDAL EPITHELIUM AND FIBROUS WALL, CONSISTENT WITH
  URACHAL CYST.
- NO SIGNIFICANT INFLAMMATION.
- NEGATIVE FOR MALIGNANCY.

See also

References

  1. Naiditch JA, Radhakrishnan J, Chin AC (October 2013). "Current diagnosis and management of urachal remnants". J. Pediatr. Surg. 48 (10): 2148–52. doi:10.1016/j.jpedsurg.2013.02.069. PMID 24094971.
  2. Bagnara V, Antoci S, Bonforte S, Privitera G, Luca T, Castorina S (2014). "Clinical considerations, management and treatment of fever of unknown origin caused by urachal cyst: a case report". J Med Case Rep 8 (1): 106. doi:10.1186/1752-1947-8-106. PMC 3978086. PMID 24661549. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3978086/.
  3. 3.0 3.1 3.2 URL: https://www.auanet.org/education/modules/pathology/bladder-histoanatomic/urachal-remnant.cfm. Accessed on: 30 March 2015.
  4. 4.0 4.1 Yagishita H, Nagayama T, Zean Z, et al. (December 2001). "[A case of asymptomatic urachal cyst in autopsy--histopathological study of urachal cyst and review of the literature of 99 cases during a 10 year period in Japan]" (in Japanese). Hinyokika Kiyo 47 (12): 849–52. PMID 11828771.
  5. Zhou, Ming; Magi-Galluzzi, Cristina (2006). Genitourinary Pathology: A Volume in Foundations in Diagnostic Pathology Series (1st ed.). Churchill Livingstone. pp. 146. ISBN 978-0443066771.