title: Polycythemia and increased erythropoietin in a patient with chronic kidney disease.
abstract: BACKGROUND
  A 16-year-old white male with a history of obstructive uropathy presented to a pediatric outpatient clinic with a first syncope. At presentation, he had a hemoglobin level of 220 g/l, a serum erythropoietin level of 27.4 U/l and a serum creatinine level of 200.7 micromol/l (2.27 mg/dl).
  
  
  METHODS
  Physical examination, serum laboratory analysis, renal ultrasound, MRI, and 99mTc-MAG3 scintigraphy of the kidneys.
  
  
  METHODS
  Chronic renal insufficiency caused by obstructive hydronephrosis and accompanied by increased erythropoietin levels of renal origin and polycythemia.
  
  
  RESULTS
  Serial phlebotomies and laparoscopic removal of the right hydronephrotic kidney.
authors: Department of Neonatology, University Hospital Charité of Berlin, Germany.
authors: Simone
authors: S
authors: Stark
authors: Björn
authors: B
authors: Winkelmann
authors: Christof
authors: C
authors: Kluthe
authors: Jan
authors: J
authors: Roigas
authors: Uwe
authors: U
authors: Querfeld
authors: Dominik
authors: D
authors: Müller
mesh_terms: D000293:Adolescent; D015415:Biomarkers / Q000097:blood; D004921:Erythropoietin / Q000097:blood*; D005500:Follow-Up Studies; D006454:Hemoglobins / Q000378:metabolism; D006801:Humans; D007676:Kidney Failure, Chronic / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D009392:Nephrectomy; D011086:Polycythemia / Q000097:blood / Q000209:etiology*; D012720:Severity of Illness Index
chemical_list: D015415:Biomarkers; D006454:Hemoglobins; D004921:Erythropoietin