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Hypoplastic Dysplastic Kidney with a Vaginal Ectopic Ureter Identified by Technetium-99m-DMSA Scintigraphy

Division of Nuclear Medicine, Department of Radiology and Departments of Urology and Pathology, Children's Hospital, Harvard Medical School, Boston, Massachusetts

Correspondence: For correspondence or reprints contact: S. Ted Treves, MD, Division of Nuclear Medicine, Department of Radiology, Children's Hospital, 300 Longwood Ave., Boston, MA 02115.

ABSTRACT

Ectopic insertion of a ureter draining a hypoplastic dysplastic kidney is a significant cause of urinary incontinence in girls. In this case, such a kidney was detected with ^99mTc-DMSA scintigraphy but not by intravenous pyelography. Scintigraphy facilitated further delineation of the anatomy with CT prior to nephrectomy. Based on this case and a literature review, we suggest that ^99mTc-DMSA scintigraphy be performed early when evaluating girls with urinary incontinence.

Key Words: technetium-99m-dimercaptosuccinic acid • kidney • urinary incontinence • ectopic ureter