Preferred Label : nubbin sign;
Definition : Small nubbin of tissue with faintly visible collecting system inferior to a healthy
upper kidney pole on an intravenous pyelogram. Suggests renal duplication with atrophy
of lower pole due to reflux, infection, obstruction, or congenital hypoplasia.;
Source : Eisenberg, Ronald L. Atlas of Signs in Radiology.;
Origin ID : RID35400;
Associated condition(s)
Small nubbin of tissue with faintly visible collecting system inferior to a healthy
upper kidney pole on an intravenous pyelogram. Suggests renal duplication with atrophy
of lower pole due to reflux, infection, obstruction, or congenital hypoplasia.
