Abdominal Pain ± Distention
Fever
Tachycardia
Diarrhea, ± Bloody
Hypotension
Altered Mental Status (AMS)
Bowel perforation
Peritonitis
Septicemia
Peritonitis
Septicemia
Toxic megacolon
Small bowel obstruction
Mesenteric ischemia
Large bowel obstruction
Neutropenic enterocolitis 
Volvulus, Neoplastic Disease, Paralytic ileus, Pseudo-obstruction
Short bowel syndrome
Colitis