Abstract:A 38-year-old man had severe loin pain and computed tomography performed 48 hours later, after drip infusion pyelography (DIP), revealed wedge-shaped contrast enhancement. He showed mild impairment of renal function with no evidence of rhabdomyolysis. The loin pain lasted for 5 days and the wedge-shaped contrast enhancement on CT persisted for 14 days and improved. The case was compatible with the new syndrome, loin pain and persistent wedge-shapedcontrast enhancement on CT, proposed by Ishikawa et al
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