Fig. 6

Metastatic ILC of the colon in a 77-year-old female with recurrent episodes of subacute intestinal obstruction over 6 months. She had completed therapy for Stage 3A ILC more than 10 years ago. a Axial contrast-enhanced CT colonography shows focal segments of smooth, mural thickening (black arrows) in the hepatic flexure (top), transverse colon (middle), and descending colon (bottom), mimicking peristalsis. No discrete mass is seen. b ¹⁸F-FDG PET/CT scan performed shortly after demonstrates that these segments of mural thickening in the colon (white arrows) have minimal ¹⁸F-FDG-uptake. c Reconstructed CT colonography virtual dissection image shows that the normal haustra of the hepatic flexure (black arrowhead) is disrupted by abnormal, focal mural thickening (∆), confirming that it is pathological. d Axial contrast-enhanced CT 1 year later shows progression of metastatic disease involving the hepatic flexure, transverse colon, and descending colon (white arrowheads)