title: Basaloid squamous cell carcinoma of the maxilla.
abstract: The study reports the first case of basaloid squamous cell carcinoma (BSCC) involving both the oral mucosa and the tuberosity area of the maxilla. The tumour showed many histological similarities to cases previously reported, though mitoses were not frequent. The immunoreactivity for cytokeratin, S-100, vimentin, Ki-67, p53, c-erbB-2 and bcl-2 was also investigated. Immunostaining for the bcl-2 protein showed a high extent of positive cells, although only a moderate staining intensity. Staining for c-erbB-2 was negative. The pathological findings and the immunoreactivity may indicate that BSCC is not as high a grade carcinoma as previously suggested. Additional studies are thus clearly needed to confirm or reject this impression.
authors.affiliation: Dept of Oral Pathology, School of Dentistry, Karolinska Institute, Huddinge, Sweden.
authors.forename: C
authors.initials: C
authors.lastname: Wedenberg
authors.forename: P
authors.initials: P
authors.lastname: Jesslén
authors.forename: G
authors.initials: G
authors.lastname: Lundqvist
authors.forename: J
authors.initials: J
authors.lastname: Lundgren
authors.forename: H B
authors.initials: HB
authors.lastname: Hellquist
mesh_terms: D002281:Carcinoma, Basosquamous / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D007150:Immunohistochemistry; D007381:Intermediate Filament Proteins / Q000378:metabolism; D019394:Ki-67 Antigen / Q000378:metabolism; D008297:Male; D008441:Maxillary Neoplasms / Q000378:metabolism / Q000473:pathology*; D008875:Middle Aged; D009061:Mouth Mucosa / Q000378:metabolism / Q000473:pathology*; D009062:Mouth Neoplasms / Q000378:metabolism / Q000473:pathology*; D009363:Neoplasm Proteins / Q000378:metabolism; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000378:metabolism; D018719:Erb-b2 Receptor Tyrosine Kinases / Q000378:metabolism; D009418:S100 Proteins / Q000378:metabolism; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism
chemical_list: D007381:Intermediate Filament Proteins; D019394:Ki-67 Antigen; D009363:Neoplasm Proteins; D019253:Proto-Oncogene Proteins c-bcl-2; D018719:Erb-b2 Receptor Tyrosine Kinases; D009418:S100 Proteins; D016159:Tumor Suppressor Protein p53