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[Giant mucocele of appendix. Case report]

M Pittaluga1, R Lombezzi, G Fantino

  • 1Ospedale Santo Spirito-Bra (Cn), Divisione Chirurgia Generale.

Il Giornale Di Chirurgia
|December 7, 2005
PubMed

Insights

Appendiceal mucocele, a mucus accumulation in the appendix, presents with right lower quadrant pain. The specific "onion skin sign" on ultrasound aids in diagnosing this uncommon condition.

Area of Science:

  • Gastroenterology
  • Radiology
  • Pathology

Background:

  • Appendiceal mucocele is a rare condition involving mucus buildup in the appendix.
  • It encompasses diverse histopathologic subtypes, influencing patient prognosis.

Observation:

  • Common symptoms include right lower quadrant pain or a palpable mass.
  • Preoperative diagnosis relies on ultrasound (US) and computed tomography (CT) scans.

Findings:

  • CT scans often reveal a cystic mass with wall calcification.
  • Ultrasound may show a cystic lesion with the characteristic "onion skin sign."

Implications:

  • The "onion skin sign" on ultrasound is a specific marker for appendiceal mucocele.
  • This finding, with normal female reproductive organs, strongly suggests the diagnosis.

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