To the editor: In their recently reported study of renalpathologic findings in patients after intestinal bypass surgery, Drenick and colleagues (1) observed “definite morphologic abnormalities … in all cases.” We describe a clinically similar case in which kidney biopsy findings were normal.
The patient presented to his private internist on 23 October 1978 after awakening that morning with painless gross hematuria. His medical history was significant for a successful jejunoileal intestinal bypass 2½ years earlier, with weight reduction from 147.4 to 85.3 kg. Glycosuria had been detected before the bypass, but renal function was reportedly normal. Intermittent, mild