Figure 9.

Fecal impaction: (a and b) Erect and supine plain abdominal radiograph in a 75-year-old man presenting with abdominal distension and worsening lower abdominal pain demonstrates dilatation of the large bowel loops. Computed tomography scan (c and d) performed subsequently demonstrates large amount of stool in the sigmoid colon and rectum (arrows) which resulted in large bowel dilatation. No mass was identified and the patient was managed conservatively with enemas. Repeat computed tomography performed subsequently demonstrates resolution of the impacted feces with residual fluid in the sigmoid colon (e).