title: Urinary tract malformation and infection with hyperkalemia and decreased fractional excretion of potassium in an infant.
abstract: We describe an uncircumcised male infant treated for urinary tract infection who exhibited multiple hormonal and electrolyte abnormalities consistent with a diagnosis of transient pseudohypoaldosteronism. Successful treatment of the urinary tract infection was accompanied by the resolution of all hormonal and electrolyte abnormalities, including hyperaldosteronemia, hyperreninemia, hyponatremia and hyperkalemia. Radiographic examination revealed marked left dilatation of the renal pelvis and hydroureter but no vesicoureteral reflux. Owing to the possibilities of future renal scarring, decreased renal function, and hypertension, evaluation of urinary tract malformation and appropriate hormonal studies should be performed in infants with urinary tract infection and hyperkalemia.
authors.affiliation: Department of Pediatrics, Nippon Medical School Graduate School of Medicine, Chiba, Japan. VFF13540@nifty.ne.jp
authors.forename: Takeshi
authors.initials: T
authors.lastname: Asano
authors.forename: Masanori
authors.initials: M
authors.lastname: Abe
authors.forename: Makiko
authors.initials: M
authors.lastname: Asai
authors.forename: Taiyoh
authors.initials: T
authors.lastname: Imai
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Kamisago
authors.forename: Kentaroh
authors.initials: K
authors.lastname: Kuwabara
authors.forename: Mizue
authors.initials: M
authors.lastname: Nakajima
authors.forename: Mutsumi
authors.initials: M
authors.lastname: Murakami
authors.forename: Osamu
authors.initials: O
authors.lastname: Fujino
mesh_terms: D006801:Humans; D006947:Hyperkalemia / Q000209:etiology*; D007223:Infant; D008297:Male; D011188:Potassium / Q000652:urine*; D011546:Pseudohypoaldosteronism / Q000150:complications; D014551:Urinary Tract / Q000002:abnormalities*; D014552:Urinary Tract Infections / Q000150:complications*
chemical_list: D011188:Potassium