Duplication of the colon: varied presentations of a rare congenital anomaly.

Duplication of the colon is a rare congenital anomaly which may produce diagnostic difficulties for both clinician and radiologist. We report three patients who illustrate the spectrum of clinical and radiographic features which may be encountered. Radiology is essential in assessing the full extent of this condition including its various presentations, associated congenital anomalies, and anticipated complications.