Abstract
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• Describe the diagnostic imaging characteristics of an appendiceal mucocele (AM).
• Identify differential diagnoses for an AM.
• Discuss complications of an AM.
To diagnose an appendiceal mucocele (AM), it is important for diagnostic imaging to demonstrate that the suspected mass is separate from the: A. Right ovary B. Left ovary C. Cecum D. Right Kidney
Which sign is specific for an AM and refers to the echogenic layering of debris within the lumen of the appendix? A. Banana peel sign B. Tip-of-the-iceberg sign C. String of pearls sign D. Onion peel sign
What appendicular outer to outer diameter measurement is convincing evidence for AM? A. Greater than 1.5 mm B. Greater than 15 mm C. Less than 1 mm D. Less than 5 mm
What is the most common differential diagnosis that must be excluded from AM in symptomatic patients? A. Acute appendicitis B. Pseudomyxoma peritonei C. Periappendiceal abscess D. Meckel diverticulum
Which of the following is a severe complication of AM? A. Peritoneal tumor B. Pseudomyxoma peritonei C. Mucinous ascites D. Omental and pelvic adhesions
What right lower quadrant finding strongly supports the diagnosis of an AM? A. Epithelial hyperplasia B. Peritoneal inclusion cyst C. Mesenteric cyst D. Mural calcification
The prevalence of AM has been shown to be higher in: A. Pediatric patients B. Males C. Females D. Teenage males
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