title: Trichoadenoma of the eyelid.
abstract: OBJECTIVE
  To report the unique occurrence of a trichoadenoma of the eyelid.
  
  
  METHODS
  An 80-year-old woman underwent surgical resection of a lesion of the right lower eyelid that was suspected to be a basal cell carcinoma. The lesion was studied with light microscopy.
  
  
  RESULTS
  Histopathology showed a lesion in the dermis that contained keratin cysts surrounded by a proliferation of eosinophilic epidermoid cells. The findings were characteristic of a trichoadenoma.
  
  
  CONCLUSIONS
  Trichoadenoma, a rare, benign, cutaneous tumor that usually occurs on the face, can develop on the eyelid and simulate a basal cell carcinoma.
authors.affiliation: Ocular Oncology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA.
authors.forename: J A
authors.initials: JA
authors.lastname: Shields
authors.forename: C L
authors.initials: CL
authors.lastname: Shields
authors.forename: R C
authors.initials: RC
authors.lastname: Eagle
mesh_terms: D000236:Adenoma / Q000473:pathology* / Q000648:ultrastructure; D000368:Aged; D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D005142:Eyelid Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D005260:Female; D006201:Hair Diseases / Q000473:pathology; D018859:Hair Follicle / Q000473:pathology* / Q000648:ultrastructure; D006801:Humans; D012878:Skin Neoplasms / Q000473:pathology* / Q000648:ultrastructure