Fig. 2

Imaging showed a tumor in the left lung field and sigmoid colon. a Chest CT revealed a residual soft tissue mass anteriorly within the left upper lobe measuring approximately 2.0 × 1.7 cm without appreciable adenopathy (not shown) consistent with the patient’s known history of lung cancer. b Abdomen and pelvic CT showed a soft tissue mass with approximate 5.0 × 4.7 cm dimensions within sigmoid colon (arrow) at 15 cm from the anal orifice. A sigmoid mass with extrinsic features and mucosal involvement can be seen contributing to marked narrowing of the sigmoid colon, but allowed contrast to pass through area of narrowing