Non contrast due to renal impairment.
4.5cm stenosing tumour at the junction of the sigmoid and descending colon with resultant dilatation of the large bowel upto 9cm. Blebs of intramural gas throughout the colon.
The distal small bowel is dilated due to a incompetent ileocaecal valve.
Multiple foci of pneumoperitoneum in the mid and upper abdomen.
No overt infradiaphrgamatic nodes.
At least two right lower lobe lung nodules, the largest 8mm.