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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
Summary
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.