CASE 137

History: A 54-year-old man undergoes assessment for swelling of the left groin.

1. What should be included in the differential diagnosis of the imaging finding in the right lower quadrant shown in the figures? (Choose all that apply.)

A. Appendiceal tumor

B. Crohn’s disease

C. Appendicolith

D. Appendicitis

E. Mucocele

2. What is the most common cause of an appendiceal mucocele?

A. Obstruction

B. Mucosal hyperplasia

C. Mucinous cystadenoma

D. Mucinous cystadenocarcinoma

3. What is the most common neoplasm of the appendix?

A. Adenocarcinoma

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