PMC9807348_01
(a) A left staghorn calculus measuring 40 x 30 mm was observed. (b) Preoperative CT showed no anatomical risk factor of peritoneal puncture.
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An abdominal radiograph revealed a left staghorn calculus measuring 40 x 30 mm (Fig. 1a). Contrast-enhanced CT showed no anatomical risk factor for peritoneal puncture, such as anatomical abnormalities of the descending colon (Fig. 1b).
(a) A large amount of intraperitoneal fluid was observed despite little fluid accumulation in the retroperitoneal cavity. (b) Bilateral pleural effusion was observed. (c) Arrows show the nephrostomy tube tip located at the middle renal calyx.
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Diagnosis was difficult using only bed-side ultrasonography; hence, a CT scan was performed (Fig. 2).