title: Evaluation of basement membrane status in aggressive skin carcinomas with skull base invasion: a case-control study.
abstract: Some skin carcinomas may be very aggressive. Breached of basement membrane (BM) has been in some situations associated with tumor aggressiveness. In this study, the status of BM in invasion was evaluated in basal cell carcinomas (BCCs) and squamous cell carcinomas (SCCs) with skull base invasion, and it was compared with tumor's good outcome. Integrity or breached of BM was visualized using immunohistochemistry technique with anti-type IV collagen antibody. The pattern of BM was classified as intact, breached, or absent in 24 BCCs and 11 SCCs with skull base invasion. Control group (good outcome) included 23 BCCs and 10 SCCs. Breached BM and absence of BM were respectively noted in 33.33% and 45.83% of BCCs with skull base invasion, compared with 8.33% and 17.395% in the control group ( P < .001). Regarding SCCs, ruptured and absent BMs were, respectively, noted in 36.36% and 63.64% of BCCs with skull base invasion, compared with 30% and 30% in the control group ( P = .075). In this study, destruction of BM was significantly more common in BCCs with skull base invasion, in comparison with those with good outcome. In SCC, this difference was not statistically significant.
authors.affiliation: Department of Head and Neck Surgery, University of São Paulo Medical School, 01422-000 São Paulo, Brazil. cerneamd@uol.com.br
authors.forename: Claudio R
authors.initials: CR
authors.lastname: Cernea
authors.forename: Alberto R
authors.initials: AR
authors.lastname: Ferraz
authors.forename: Inês V
authors.initials: IV
authors.lastname: de Castro
authors.forename: Miriam N
authors.initials: MN
authors.lastname: Sotto
authors.forename: Angela F
authors.initials: AF
authors.lastname: Logullo
authors.forename: André S
authors.initials: AS
authors.lastname: Potenza
authors.forename: Carlos E
authors.initials: CE
authors.lastname: Bacchi
mesh_terms: D001485:Basement Membrane / Q000378:metabolism / Q000473:pathology*; D014408:Biomarkers, Tumor / Q000378:metabolism; D002280:Basal Cell Carcinoma / Q000378:metabolism / Q000556:secondary* / Q000628:therapy; D002294:Carcinoma, Squamous Cell / Q000378:metabolism / Q000556:secondary* / Q000628:therapy; D024141:Collagen Type IV / Q000378:metabolism; D003131:Combined Modality Therapy; D006258:Head and Neck Neoplasms / Q000473:pathology; D006801:Humans; D007150:Immunohistochemistry; D009361:Neoplasm Invasiveness; D012189:Retrospective Studies; D016037:Single-Blind Method; D012878:Skin Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000628:therapy; D019291:Skull Base / Q000473:pathology*; D019292:Skull Base Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000628:therapy
chemical_list: D014408:Biomarkers, Tumor; D024141:Collagen Type IV