An 80 year old man came with complaints of bleeding per rectum and abdominal pain since two days. On per rectal examination a mass was felt and fresh blood was noted,
The contrast enhanced CT scan of the abdomen shows a well-defined, rounded, fat -density lesion measuring 10.6 x 5.5 cm in the sigmoid colon. There is telescoping of the distal transverse and descending colon into the distal sigmoid colon.