Digital rectal exam
Chemistry to evaluate for hypokalemia or hypercalcemia
TSH if indicated
Abdominal X-ray to evaluate for air-fluid levels and free-air
CT if severe presentation
Stercoral colitis is CT finding caused by impacted<unk>  material causing pressure edema and ischemia on the bowel wall. Left untreated, the condition can lead to wall ischemia, ulceration, and perforation.
Findings include colonic wall thickening, pericolonic fat stranding, and extraluminal bubbles of gas or abscess (signs of perforation); all of which are not found in uncomplicated<unk> .
Stercoral colitis is CT finding caused by impacted<unk>  material causing pressure edema and ischemia on the bowel wall. Left untreated, the condition can lead to wall ischemia, ulceration, and perforation.
Findings include colonic wall thickening, pericolonic fat stranding, and extraluminal bubbles of gas or abscess (signs of perforation); all of which are not found in uncomplicated<unk> .
Findings include colonic wall thickening, pericolonic fat stranding, and extraluminal bubbles of gas or abscess (signs of perforation); all of which are not found in uncomplicated<unk> .
Fecal impaction
Behavioral-related
Rectal foreign body
Lack of exercise
Volvulus 
Diet-related
Volvulus
Clogged G-tube