A patient complains of fever, flatulence, left lower quadrant stomach discomfort that worsens with coughing and straining, and feverish symptoms. Also mentioned are changes in bowel habits. Upon physical examination, a palpable, sensitive rectal tumor is discovered. Intestinal mucosal inflammation and outpouchings are seen on a CT scan of the sigmoid colon. The most likely diagnosis for the patient is:
-
A
Diverticulitis
-
B
Crohn's disease
-
C
Appendicitis
-
D
Ulcerative colitis