Dear Editor, Obstructive calculous disease of the kidney often results in infectious complications such as pyelonephritis and perinephric abscesses. Renojejunal fi stula formation may occur as the infl ammation becomes chronic. We report one such case and review 4 other cases reported in the literature. A 55-year-old Malay gentleman presented with left-sided pyonephrosis with a concomitant psoa...