Urachal remnant

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

It includes:

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

General

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

Gross

• Between umbilicus and dome of bladder.
  • May bulge into the urinary bladder.

Microscopic

Features:

• Cuboidal or urothelial lining.
  • May have a columnar lining.
• Fibrous wall.
• +/-Goblet cells. ‡

Notes:

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

Sign out

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

• Urinary bladder.
• Urachal carcinoma.