T. Helbig et G. Hutschenreiter, EXTRARENAL PYELOCALICEAL DIVERTICULA AS A CAUSE OF RECURRENT LITHIASIS OF THE UPPER URINARY-TRACT, Aktuelle Urologie, 25(5), 1994, pp. 318-320
Anomalies of the upper urinary tract are possibly a factor in the path
ogenesis of recurrent urolithiasis. The rare case of a stone-containin
g extrarenal pyelocaliceal diverticula and the problems in differentia
l diagnosis are described.