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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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contentuptodate· Content· item f17_53_18259

©2013 UpToDate ® Print Email Perforated duodenal ulcer Computed tomographic scan showing free air in the anterior peritoneal space (white arrows), in the ligamentum venosum (black arrow), and in the hepatogastric ligament (small black arrow) resulting from a perforation of a duodenal peptic ulcer. Courtesy of Jonathan B Kruskal, MD, PhD.