title: [Nephrolithiasis as a nephrectomy surgical indication. A multicentric study].
abstract: BACKGROUND
  urolithiasis is endemic in Yucatan, Mexico, and its complications are abscesses and renal exclusion which end up in a nephrectomy. Our objective in this paper was to know the nephrectomy indications in Yucatecan population.
  
  
  METHODS
  the nephrectomies from four concentrations hospitals of the Health Services, were analyzed. Patients older than 18 years were included; surgical indication, evolution time of the disease, and associated illnesses were registered. The diagnosis was confirmed by laboratory, X-rays or anatomopathological study. Statistics were t Student test and chi(2).
  
  
  RESULTS
  206 (70.5 %) women and 86 (29.5 %) men were included; they were 48 + or - 14 years of age with an evolution time 40 + or - 70 months. Nephrolithiasis was observed in 59.6 %, renal tumors 21.9 %, hydronephrosis 7.9 % and abscess 3.4 %. No cases with nephrolithiasis had metabolic studies. The cases with lithiasis (n = 174) had a longer evolution time and were younger at the time of the surgical procedure (p < 0.05) than those not related to lithiasis (n = 118).
  
  
  CONCLUSIONS
  nephrolithiasis is the most frequent indication for nephrectomy in the Yucatecan population which differs from others reports.
authors.affiliation: Departamento de Investigación, Hospital General "Dr. Agustín O'Horán," Servicios de Salud de Yucatán, Mérida, Yucatán, México. marthamedinaescobedo@hotmail.com
authors.forename: Martha
authors.initials: M
authors.lastname: Medina-Escobedo
authors.forename: Gloria
authors.initials: G
authors.lastname: Martín-Soberanis
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy; D053040:Nephrolithiasis / Q000601:surgery*; D012189:Retrospective Studies; D055815:Young Adult