title: [Controversies in the evaluation of asymptomatic microhematuria].
abstract: OBJECTIVE
  Asymptomatic microhematuria continues to be a problem. It has a prevalence of 16% and numerous conditions can present this clinical manifestation.
  
  
  METHODS
  A prospective study was carried out on all patients that consulted at the urological services during 2000 for asymptomatic hematuria. Patients presenting with irritative symptoms, urethral secretion, perineal or suprapubic pain, urinary tract infections, renal lithiasis or history of trauma were not included in the study.
  
  
  RESULTS
  None of the patients presented tumors. Two patients presented renal lithiasis, 5 simple renal cysts, 8 hypercalciuria and 3 hyperuricosuria. None of the 11 patients with hypercalciuria or hyperuricosuria had a history of lithiasis.
  
  
  CONCLUSIONS
  Although the size of the study is small, the incidence of tumors in patients with asymptomatic microhematuria appears to be far from the 12.5% incidence reported by some authors and might probably be closer to the 0.5% incidence reported by others. Furthermore, the significant pathology (renal lithiasis), which requires treatment, is also infrequent.
authors.affiliation: Servicio de Urología, Hospital Virgen de la Arrixaca, El Palmar, Murcia, España. pedro lópez cubilana@hotmail.com
authors.forename: Pedro
authors.initials: P
authors.lastname: López Cubillana
authors.forename: Antonio
authors.initials: A
authors.lastname: Prieto González
authors.forename: Gerardo
authors.initials: G
authors.lastname: Server Pastor
authors.forename: José Antonio Nicolás
authors.initials: JA
authors.lastname: Torralba
authors.forename: Guillermo
authors.initials: G
authors.lastname: Gómez Gómez
authors.forename: Angel
authors.initials: A
authors.lastname: Guardiola Mas
authors.forename: Pablo
authors.initials: P
authors.lastname: Martínez Pertusa
authors.forename: José Antonio
authors.initials: JA
authors.lastname: García Hernández
authors.forename: Vicente J
authors.initials: VJ
authors.lastname: Bañón Pérez
authors.forename: Pedro
authors.initials: P
authors.lastname: Valdelvira Nadal
authors.forename: Enrique
authors.initials: E
authors.lastname: Cao Avellaneda
authors.forename: Lucas
authors.initials: L
authors.lastname: Asensio Egea
authors.forename: Mariano
authors.initials: M
authors.lastname: Pérez Albacete
mesh_terms: D002118:Calcium / Q000652:urine; D003558:Cystoscopy; D006417:Hematuria / Q000175:diagnosis* / Q000453:epidemiology / Q000209:etiology; D006801:Humans; D007674:Kidney Diseases / Q000150:complications / Q000175:diagnosis / Q000453:epidemiology; D011446:Prospective Studies; D013030:Spain / Q000453:epidemiology; D014527:Uric Acid / Q000652:urine; D014567:Urography
chemical_list: D014527:Uric Acid; D002118:Calcium