title: Contradictory renal function measured with mercaptoacetyltriglycine diuretic renography in unilateral hydronephrosis.
abstract: OBJECTIVE
  We studied apparently supranormal renal function in hydronephrotic kidneys, as measured by 99mtechnetium mercaptoacetyltriglycine renography.
  
  
  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.
authors.affiliation: Department of Urology, University of California School of Medicine, San Francisco 94143-0738, USA.
authors.forename: G R
authors.initials: GR
authors.lastname: Gluckman
authors.forename: L S
authors.initials: LS
authors.lastname: Baskin
authors.forename: G A
authors.initials: GA
authors.lastname: Bogaert
authors.forename: R A
authors.initials: RA
authors.lastname: Mevorach
authors.forename: R S
authors.initials: RS
authors.lastname: Hattner
authors.forename: B A
authors.initials: BA
authors.lastname: Kogan
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging* / Q000503:physiopathology; D007223:Infant; D008297:Male; D011866:Radioisotope Renography; D012189:Retrospective Studies; D017263:Technetium Tc 99m Mertiatide
chemical_list: D017263:Technetium Tc 99m Mertiatide