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Figure 1. A 33-year-old man with hemophilia and the acquired immunodeficiency syndrome had a six-hour history of severe right-sided flank pain and right-lower-quadrant pain accompanied by nausea, vomiting, and anorexia. The patient was afebrile and euvolemic. His medications included zidovudine, lamivudine, and indinavir. A computed tomographic scan with the intravenous administration of contrast medium, obtained to assess the possibility of appendicitis and retroperitoneal bleeding, revealed a mildly dilated right renal collecting system. This finding was confirmed by x-ray examination of the kidneys and upper bladder (Panel A), which provides a view equivalent to that of intravenous pyelography. Urinalysis showed . . . [Full Text of this Article] |