title: Collision sebaceous and basal cell carcinomas of the eyelid.
abstract: OBJECTIVE
  To report a rare case of collision sebaceous and basal cell carcinomas of the eyelid.
  
  
  METHODS
  Interventional case report.
  
  
  METHODS
  An 80-year-old woman presented with a nodular lesion at the center of the left lower eyelid. Small ulceration and madarosis were also present.
  
  
  RESULTS
  The patient underwent excisional biopsy with frozen section control. Histopathology showed mixed sebaceous as well as basal cell carcinoma with uninvolved surgical margins. Oncologic survey did not disclose any other lesion. At 6-month follow-up, there was no evidence of recurrence, new lesions, or metastasis.
  
  
  CONCLUSIONS
  Sebaceous and basal cell carcinomas can coexist in the eyelid within the same clinical lesion. Because of the potential risk of metastasis of sebaceous carcinoma, close follow-up of the patients is advisable.
authors.affiliation: Department of Ophthalmology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel. ljaime@bgu.ac.il
authors.forename: Jaime
authors.initials: J
authors.lastname: Levy
authors.forename: Emanuela
authors.initials: E
authors.lastname: Cagnano
authors.forename: Daniel
authors.initials: D
authors.lastname: Benharroch
authors.forename: Tova
authors.initials: T
authors.lastname: Monos
authors.forename: Tova
authors.initials: T
authors.lastname: Lifshitz
mesh_terms: D018266:Adenocarcinoma, Sebaceous / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis; D002280:Basal Cell Carcinoma / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D005142:Eyelid Neoplasms / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D009378:Neoplasms, Multiple Primary / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome
chemical_list: D014408:Biomarkers, Tumor