Duodenal obstruction from ovarian carcinoma on CT

(A) A scout film shows a distended stomach (asterisk) and a right ureteric stent (arrow).
(B) A CT scan through the upper abdomen. The image shows an air fluid level in a distended stomach (asterisk), a focal narrowing in the duodenum (arrow), and an ill-defined ovarian metastasis in the retroperitoneum at the site of obstruction (arrowhead).