Figure 8c. Bulbous fold mimicking a pedunculated polyp. (a) Supine axial CT image shows a pedunculated lesion (arrow) in the sigmoid colon. (b) Coronal CT image shows the linear morphology of the lesion (arrow). (c) Endoluminal CT image shows that the lesion is an interhaustral fold (arrow). Note the small diverticula (arrowheads).