Contradictory renal function measured with mercaptoacetyltriglycine diuretic renography in unilateral hydronephrosis

J Urol. 1995 Oct;154(4):1486-9; discussion 1489-90.

Abstract

Purpose: We studied apparently supranormal renal function in hydronephrotic kidneys, as measured by 99mtechnetium mercaptoacetyltriglycine renography.

Materials and methods: We retrospectively reviewed the clinical history, ultrasonography and renography of 29 children.

Results: Of the 29 children 7 had greater than 50% relative function in the hydronephrotic kidney. This finding was independent of patient age, gender, degree of hydronephrosis or obstructive pattern. Of these 7 cases 6 occurred on the right side (p < 0.05 versus a large registry).

Conclusions: In most cases supranormal renal function is caused by a technical problem, likely the inadequate background subtraction of mercaptoacetyltriglycine in the liver.

MeSH terms

  • Child
  • Child, Preschool
  • Female
  • Humans
  • Hydronephrosis / diagnostic imaging*
  • Hydronephrosis / physiopathology
  • Infant
  • Male
  • Radioisotope Renography*
  • Retrospective Studies
  • Technetium Tc 99m Mertiatide*

Substances

  • Technetium Tc 99m Mertiatide