title: Defining and recognising locally advanced basal cell carcinoma.
abstract: BACKGROUND
  Rarely, basal cell carcinomas (BCCs) have the potential to become extensively invasive and destructive, a phenomenon that has led to the term "locally advanced BCC" (laBCC). We identified and described the diverse settings that could be considered "locally advanced".
  
  
  METHODS
  The panel of experts included oncodermatologists, dermatological and maxillofacial surgeons, pathologists, radiotherapists and geriatricians. During a 1-day workshop session, an interactive flow/sequence of questions and inputs was debated.
  
  
  RESULTS
  Discussion of nine cases permitted us to approach consensus concerning what constitutes laBCC. The expert panel retained three major components for the complete assessment of laBCC cases: factors of complexity related to the tumour itself, factors related to the operability and the technical procedure, and factors related to the patient. Competing risks of death should be precisely identified. To ensure homogeneous multidisciplinary team (MDT) decisions in different clinical settings, the panel aimed to develop a practical tool based on the three components.
  
  
  CONCLUSIONS
  The grid presented is not a definitive tool, but rather, it is a method for analysing the complexity of laBCC.
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Jean Michel
authors.initials: JM
authors.lastname: Amici
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Maxime
authors.initials: M
authors.lastname: Battistella
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Marie
authors.initials: M
authors.lastname: Beylot-Barry
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Anne
authors.initials: A
authors.lastname: Chatellier
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Sophie
authors.initials: S
authors.lastname: Dalac-Ra
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Brigitte
authors.initials: B
authors.lastname: Dreno
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Claire
authors.initials: C
authors.lastname: Falandry
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Froget
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Damien
authors.initials: D
authors.lastname: Giacchero
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Jean Jacques
authors.initials: JJ
authors.lastname: Grob
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Pierre
authors.initials: P
authors.lastname: Guerreschir
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Marie-Thérèse
authors.initials: MT
authors.lastname: Leccia
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Olivier
authors.initials: O
authors.lastname: Malard
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Laurent
authors.initials: L
authors.lastname: Mortier
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Emilie
authors.initials: E
authors.lastname: Routier
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Andreea
authors.initials: A
authors.lastname: Stefan
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Dinu
authors.initials: D
authors.lastname: Stefan
authors.affiliation: Basal cell carcinoma French Expert Group.
authors.forename: Pierre-Emmanuel
authors.initials: PE
authors.lastname: Stoebner
authors.affiliation: Basal cell carcinoma French Expert Group, Université Paris 7, hôpital Saint-Louis, 1 avenue Claude-Vellefaux, 75011 Paris.
authors.forename: Nicole
authors.initials: N
authors.lastname: Basset-Seguin
mesh_terms: D002280:Basal Cell Carcinoma / Q000453:epidemiology / Q000473:pathology / Q000628:therapy; D003226:Congresses as Topic; D003880:Dermatology; D005060:Europe / Q000453:epidemiology; D006801:Humans; D009017:Morbidity / Q000639:trends; D017410:Practice Guidelines as Topic; D012878:Skin Neoplasms / Q000453:epidemiology / Q000473:pathology / Q000628:therapy; D012955:Societies, Medical
keywords: basal cell carcinoma; definition; locally advanced