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Appendiceal mucocele: sonographic findings

K Sasaki1, H Ishida, T Komatsuda

  • 1Center of Diagnostic Ultrasound, Red Cross Hospital, 222-1, Inashirozawa Saruta Kamikitade, Akita, Japan.

Abdominal Imaging
|December 17, 2002
PubMed
Abstract

Insights

Appendiceal mucocele (AM) presents as an elongated, echo-poor mass on ultrasound. Early diagnosis and management are crucial to prevent complications like pseudomyxoma peritonei.

Area of Science:

  • Gastroenterology
  • Radiology
  • Surgical Pathology

Background:

  • Appendiceal mucocele (AM) is a rare condition with limited analysis of its ultrasound (US) characteristics.
  • Understanding US findings is essential for accurate diagnosis and timely intervention.

Purpose of the Study:

  • To analyze the specific ultrasound findings in patients diagnosed with appendiceal mucocele.
  • To correlate US features with the pathological characteristics of AM.

Main Methods:

  • Retrospective review of ultrasound examinations from five patients with confirmed appendiceal mucocele.
  • Detailed assessment of mass size, shape, internal echoes, and posterior acoustic features.

Main Results:

  • All five AM cases appeared as elongated masses in the right lower abdomen.
  • Internal echoes were consistently observed, with M-mode confirming their movement.
  • Echogenicity varied with transducer frequency; posterior echo enhancement was rare, and lateral shadowing absent.

Conclusions:

  • Appendiceal mucocele typically appears as an elongated, echo-poor mass with indistinct walls on US.
  • Suspicion for AM is warranted for such masses in the right lower abdomen.
  • Prompt diagnosis and management are vital to prevent rupture and pseudomyxoma peritonei.

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