We describe 2 cases of proximal tubular defects induced by the adminis
tration of ifosfamide at a dosage of 6 g/m2/course over 2 days in chil
dren with a diagnosis of malignant mesenchymal tumors. This adverse ef
fect could be minimized dividing dosage of the drug. However at presen
t it is not clear if divided doses are completely safe. (C) 1994 Wiley
-Liss, Inc.