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Supine abdominal radiographs of 59 patients with documented pneumoperitoneum were evaluated for findings of pneumoperitoneum. The commonly described signs were seen in only 17%. Localized intraperitoneal air in the right upper quadrant was the most frequent finding, seen in 49% of patients. Identification of these collections of air is dependent upon knowledge of the anatomy of the perihepatic spaces.
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G. B. Marshall The cupola sign. Radiology, November 1, 2006; 241(2): 623 - 624. [Full Text] [PDF] |
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