Multidetector CT of the postoperative sigmoid colon and rectum: Imaging of common complications

Colorectal surgery is associated with a high complication rate. Imaging has an essential role in the postoperative assessment of the colon and rectum, being able to delineate early and late complications. Multidetector CT is the first-line imaging modality for assessing complications in the early and late postoperative period.

Familiarity with the surgical techniques, the incidence and appearance of common postoperative complications is essential for accurate characterization of the imaging features and prompt diagnosis. Herein, we describe the main surgical procedures related to the sigmoid colon and rectum and the imaging characteristics of the most common postoperative complications with emphasis on CT, together with brief clinical notes.

Complications following colorectal surgery represent a major concern. Imaging plays a vital role in the assessment of the postsurgical sigmoid colon and rectum, with CT being the modality of choice in most of the cases. Knowledge of the imaging appearance of common complications, in conjunction with the surgical and clinical history, is essential for facilitating a prompt diagnosis and guide early management.