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Perforated Duodenal Ulcer.

RADIOLOGY FINDINGS Frontal upright radiographs (Figs. 1A, B) of the abdomen demonstrate a relative paucity of bowel gas and a small amount of free intraperitoneal gas/air beneath the hemidiaphragm within the left upper quadrant. Computed tomography with intravenous contrast (Figs. 2A-C) demonstrates a large amount of ascites/ free fluid and moderate pneumoperitoneum/free air throughout the abdomen and pelvis, associated with a pocket of extraluminal gas adjacent to the first portion of the duodenum.