An 81-year-old woman presented with a 1-week history of vomiting. Findings on abdominal examination were notable for normal bowel sounds and the absence of tenderness, rebound, or guarding. A chest radiograph showed a large
air–liquid shadow in the inferior retrocardiac position. What is the diagnosis?
B)Perforated duodenal ulcer
E)Esophageal duplication cyst
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