title: Metatypical basal cell carcinoma: a clinical review.
abstract: BACKGROUND
  Metatypical cell carcinoma can be considered as a new entity of skin cancer, being an intermediate typology between basal cell carcinomas and squamous cell carcinomas. The behaviour of the metatypical cell carcinoma lies between these two varieties of skin cancer. It is difficult to perform a differential diagnosis based on morphological and clinical features - therefore it is only possible by accurate histology.
  
  
  METHODS
  The authors have retrospectively analysed clinical records of 240 patients who were affected by metatypical skin cancer and who were treated by surgery, radiotherapy and chemotherapy.
  
  
  RESULTS
  MTC affected more males than females (62.5% vs 37.5%) than males. The most affected site was the cervicofacial area, 71.7%; then the trunk, 10%; the limbs, 9.6%; the scalp 3.7%; and other regions 5%. A recurrence occurred in 24 cases (10%), mainly in head and neck area.
  
  
  CONCLUSIONS
  In this manuscript, the authors have emphasised the importance of conducting a differential diagnosis, and the importance of the specific treatment for metatypical skin cancer, even though more clinical studies and long-term follow-ups are required before establishing specific guidelines.
authors.affiliation: Department of Dermatology and Plastic Surgery, University La Sapienza, Rome, Italy. maurotarallo@hotmail.com
authors.forename: Mauro
authors.initials: M
authors.lastname: Tarallo
authors.forename: Emanuele
authors.initials: E
authors.lastname: Cigna
authors.forename: Riccardo
authors.initials: R
authors.lastname: Frati
authors.forename: Sergio
authors.initials: S
authors.lastname: Delfino
authors.forename: Daniele
authors.initials: D
authors.lastname: Innocenzi
authors.forename: Umberto
authors.initials: U
authors.lastname: Fama
authors.forename: Annamaria
authors.initials: A
authors.lastname: Corbianco
authors.forename: Nicolò
authors.initials: N
authors.lastname: Scuderi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002280:Basal Cell Carcinoma / Q000453:epidemiology / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012878:Skin Neoplasms / Q000453:epidemiology / Q000473:pathology*; D055815:Young Adult