title: [Radiosurgical labeling of non-palpable mammary lesions].
abstract: BACKGROUND
  The frequency of breast cancer is increasing worldwide and mammography allows the diagnosis of concealed lesions.
  
  
  OBJECTIVE
  To assess the diagnostic yield for carcinoma of non palpable lesions detected by mammography.
  
  
  METHODS
  We studied 46 patients, aged 24 to 67 years old, in whom a radiosurgical labeling of non palpable mammary lesions was performed. In all patients, a surgical biopsy was obtained, but the pathological study was available in only 40 patients.
  
  
  RESULTS
  The mammographic appearance of lesions were microcalcifications in 40% of women, stellate images in 27.5%, asymmetry in density in 5% and the association of microcalcifications and other signs in 20%. Seventy seven percent of lesions were benign. Four patients had an in situ ductal carcinoma, two had a predominantly in situ carcinoma and 4 had an invasive ductal carcinoma.
  
  
  CONCLUSIONS
  Our results are similar to those reported abroad. The finding of 5 minimal carcinomas underscores the effectiveness of mammography as a screening method for breast cancer.
authors.affiliation: Unidad de Mamografía, Hospital Clínico, Universidad de Chile, Santiago de Chile.
authors.forename: B
authors.initials: B
authors.lastname: Aguirre
authors.forename: L
authors.initials: L
authors.lastname: Gutiérrez
authors.forename: D
authors.initials: D
authors.lastname: Ortega
authors.forename: S
authors.initials: S
authors.lastname: Laupheimer
authors.forename: M
authors.initials: M
authors.lastname: Taborga
mesh_terms: D000328:Adult; D000368:Aged; D001941:Breast Diseases / Q000473:pathology / Q000601:surgery*; D001943:Breast Neoplasms / Q000473:pathology / Q000601:surgery*; D002114:Calcinosis; D005260:Female; D006801:Humans; D008327:Mammography; D008875:Middle Aged; D016634:Radiosurgery
vernacular_title: Marcación radioquirúrgica de lesiones mamarias no palpables.