title: Fetal compensatory renal hypertrophy with a unilateral functioning kidney.
abstract: OBJECTIVE
  To evaluate the possibility of fetal compensatory renal hypertrophy with a unilateral functioning kidney.
  
  
  METHODS
  A nomogram of renal length was established from 254 normal fetuses. Renal length was also obtained in 14 fetuses with unilateral renal agenesis and 22 fetuses with a unilateral multicystic kidney.
  
  
  RESULTS
  Compensatory renal hypertrophy, defined as a renal length > 95th percentile for gestational age, occurred in 16 of 36 cases (44.4%).
  
  
  CONCLUSIONS
  Compensatory renal hypertrophy is detectable in utero and may occur as early as 22 weeks' gestation.
authors.affiliation: Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Hospital, Pittsburgh, Pennsylvania.
authors.forename: L M
authors.initials: LM
authors.lastname: Hill
authors.forename: A
authors.initials: A
authors.lastname: Nowak
authors.forename: R
authors.initials: R
authors.lastname: Hartle
authors.forename: B
authors.initials: B
authors.lastname: Tush
mesh_terms: D000222:Adaptation, Physiological; D005260:Female; D005865:Gestational Age; D006801:Humans; D006984:Hypertrophy / Q000000981:diagnostic imaging / Q000503:physiopathology; D007668:Kidney / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000473:pathology* / Q000503:physiopathology; D015588:Observer Variation; D007690:Polycystic Kidney Diseases / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D011247:Pregnancy; D012680:Sensitivity and Specificity; D016216:Ultrasonography, Prenatal