title: [Hypernephroma metastasis in frontal sinus].
abstract: OBJECTIVE
  We present a case of metastatic neoplasia in the right frontal sinus derived from and hypernephroma, with a clinical picture that initially was interpreted as a mucocele.
  
  
  METHODS
  Sixty years old male. Personal history: prostatectomy and left nephrectomy because of hypernephroma three years before. In december 92 the patient reported a protrusion in the right frontal sinus. CT scans and NMR revealed a breakage of the external and internal walls of the right frontal sinus and the right orbital roof. In february 93 a surgical exploration of the frontal sinus revealed the metastatic nature of the lesion.
  
  
  CONCLUSIONS
  Metastatic tumors in paranasal sinuses are infrequent since most of the tumors in this localization are primary. Metastatic affectation of the frontal sinus is extremely rare. We recommend the systematic exploration of paranasal sinuses in patients affected by hypernephroma.
authors: Hospital Clínico Universitario, Zaragoza.
authors: J V
authors: JV
authors: Tisner Nieto
authors: F
authors: F
authors: Forcén Roy
authors: A
authors: A
authors: Usón García
authors: J J
authors: JJ
authors: Fraile Rodrigo
authors: J
authors: J
authors: Pérez Obón
authors: C
authors: C
authors: Yus Gotor
authors: R
authors: R
authors: Fernández Liesa
mesh_terms: D002292:Carcinoma, Renal Cell / Q000175:diagnosis / Q000556:secondary*; D005626:Frontal Sinus; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis / Q000556:secondary*
vernacular_title: Metástasis de hipernefroma en seno frontal.