Renal cortical retention of Tc-99m MAG3 in hypotension

S. A. Raber, F. V. Schraml, E. D. Silverman

Research output: Contribution to journalArticle


A three-year-old boy with a history of resected posterior urethral valves had persistent bilateral megaureter and ureterohydronephrosis. Renal scintigraphy was performed within 1 hour of cystoscopy. The initial scintigrams showed prompt cortical uptake of Tc-99m MAG3 with persistence of cortical activity both before and after the administration of furosemide. The patient's cystoscopy had been conducted under heavy general anesthesia and episodic hypotension accompanied the anesthesia. The patient was found to be significantly dehydrated during the initial diuretic renogram. The persistence of cortical activity, similar to the postcaptopril effect in renovascular hypertension, reflects the hypotension that resolved on follow- up evaluation with adequate hydration. Hypotension should be added to the differential diagnosis of persistent cortical activity.

Original languageEnglish (US)
Pages (from-to)190-192
Number of pages3
JournalClinical Nuclear Medicine
Issue number3
Publication statusPublished - 1997
Externally publishedYes


ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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