title: [Epithelioid renal angiomyolipoma].
abstract: OBJECTIVE
  To issue the existence of a variety of angiomyolipoma, named epithelioid, with different histological and clinic properties.
  
  
  METHODS
  We report the case of a 17 year old female, with Bourneville's disease, who was discovered to have a solid renal mass suggestive of carcinoma in a control CT scan, adjacent to other smaller masses identified as angiomyolipomas.
  
  
  RESULTS
  After several tumorectomies, the suspicious mass, 4 cm in size, was diagnosed as epithelioid angiomyolipoma, with immunohistochemical confirmation of capacity for HMB45, and negative vimentin and keratin.
  
  
  CONCLUSIONS
  Despite the possibility of coexistence of adenocarcinoma and angiomyolipoma, the existence of an epithelioid variety cannot be discarded, mainly in patients with phakomatosis. The indications for surgery are the same than for the rest of renal masses. Nevertheless, follow-up criteria must be stricter due to the possibility of torpid outcome in terms of dissemination of this infrequent variety of angiomyolipoma.
authors.affiliation: Servicio de Urología, Hospital de Cruces, Baracaldo, Vizcaya, España. igorazurmendi@hotmail.com
authors.forename: Igor
authors.initials: I
authors.lastname: Azurmendi Arin
authors.forename: Roberto
authors.initials: R
authors.lastname: Llarena Ibarguren
authors.forename: Jorge
authors.initials: J
authors.lastname: García-Olaverri Rodríguez
authors.forename: Ivan
authors.initials: I
authors.lastname: Olano Grasa
authors.forename: Emilio
authors.initials: E
authors.lastname: Cantón Aller
authors.forename: Carlos
authors.initials: C
authors.lastname: Pertusa Peña
mesh_terms: D000293:Adolescent; D018207:Angiomyolipoma / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis*