Patient with colicky abdominal pain after eating
no fever/n/v
hard stools 1-2x in last week
past few days, had diarrhea

fullness in his left lower quadrant with nonspecific tenderness diffusely
and no guarding or rebound
dx?

A) Viral gastroenteritis
B) Acute colitis
C) Constipation
D) Urinary tract infection
E) Nephrolithiasis