Presentation
Recurrent urinary tract infections. Abnormal configuration of the kidney on renal ultrasound.
Patient Data
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99mTc-DMSA images demonstrate abnormal anatomical location of the kidneys, which are fused at their inferior and mid-poles and positioned within the pelvis. Images are in keeping with a horseshoe kidney.
The renal cortical outline is entirely regular, with no evidence of renal cortical scarring. Differential function is mildly asymmetric, 61% left and 39% right.
Case Discussion
DMSA studies give useful diagnostic information regarding the anatomical configuration of the kidneys, in this case confirming a pelvic horseshoe kidney. Horseshoe kidneys can be prone to increased complications due to their impaired drainage, or be asymptomatic.
Children experiencing recurrent UTIs may undergo a DMSA scan to assess for the presence of renal cortical scarring, which can lead to decreased renal function if untreated.