title: [Clinicopathologic study of eyelid pilomatrixoma: the experience of the "Hospital Universitário Prof. Edgard Santos"].
abstract: OBJECTIVE
  To report the experience with eyelid pilomatrixoma during 30 years in a university hospital.
  
  
  METHODS
  A review of the Ophthalmic Pathology Laboratory at the "Hospital Universitario Prof. Edgard Santos", was conducted to identify eyelid tumor cases from 1974 to 2004. After identification of pilomatrixoma cases, a chart review retrieved data regarding gender, age, duration of symptoms, gross aspect, anatomic localization and clinical diagnosis. The hematoxilin and eosin stained sections were reviewed.
  
  
  RESULTS
  Of a total of 621 eyelid tumors, four (0.64%) were pilomatrixomas. Three patients were male. The mean age at diagnosis was 25 years (from 8 to 54). Mean duration of symptoms was 5 months (from 2 to 12). In three cases the lesion was located in the inferior lid. Only one patient had a correct clinical diagnosis. Two cases exhibited a pseudo-capsule on histology. The case with 12 months of history was composed mainly of shadow cells. Foreign body reaction was seen in all cases, calcification in only one.
  
  
  CONCLUSIONS
  This is a very rare benign tumor of young patients. Due to its rarity and variable clinical presentation, clinical misdiagnosis is common.
authors.affiliation: Hospital Universitário, Faculdade de Medicina, Universidade Federal da Bahia, Salvador, BA, Brasil. eduardomarback@uol.com.br
authors.forename: Eduardo Ferrari
authors.initials: EF
authors.lastname: Marback
authors.forename: Camila
authors.initials: C
authors.lastname: Cardoso
authors.forename: Lívia Maria Nossa
authors.initials: LM
authors.lastname: Moitinho
authors.forename: Roberto Lorens
authors.initials: RL
authors.lastname: Marback
mesh_terms: D000328:Adult; D002648:Child; D005142:Eyelid Neoplasms / Q000473:pathology* / Q000601:surgery; D005260:Female; D006201:Hair Diseases / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D018296:Pilomatrixoma / Q000473:pathology* / Q000601:surgery; D012878:Skin Neoplasms / Q000473:pathology* / Q000601:surgery