CASE 172
History: A 68-year-old man presents with peritoneal signs, pain, and fever.
1. What should be included in the differential diagnosis of the imaging finding shown in the figures? (Choose all that apply.)
2. Which of the following statements regarding perforated colon carcinoma is false?
A. Perforation is a serious, often fatal complication of colonic carcinoma.
B. Perforation is an uncommon complication of primary colonic carcinoma.