Nonobstructive, nonrefluxing pyelonephritis (or ''simple'' pyelonephri
tis) is not commonly associated with progressive renal scarring and gl
obal shrinkage. Although children are believed to be particularly susc
eptible to renal parenchymal scarring after simple pyelonephritis, pro
gressive and global renal shrinkage remains an elusive clinical entity
. We present such a case with close radiologic documentation. (C) 1998
, Elsevier Science Inc. All rights reserved.