title: Basaloid squamous cell carcinoma of the mandible: report of two cases.
abstract: Basaloid squamous cell carcinoma is a rare aggressive malignancy that is a distinct variant of squamous cell carcinoma. This report presents 2 cases of basaloid squamous cell carcinoma in the gingiva. Case 1 is a 55-year-old Japanese man who presented with a painful, red, and irregular mass on the left mandibular gingiva. Case 2 is a 65-year-old Japanese man who presented with a painless mass on the right mandibular gingiva. Both tumors were diagnosed histopathologically as basaloid squamous cell carcinoma. In case 1, the patient underwent wide resection of the gingival tumor with a partial mandibulectomy and ipsilateral functional neck dissection. The mandible was reconstructed with a titanium plate and forearm flap. In case 2, the patient underwent wide resection of the gingival tumor after local irradiation (60 Gy). At the time of writing, both patients remained in good health and free of disease.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Oita Red Cross Hospital, Oita, Japan. sika4@oita-rc-hp.jp
authors.forename: Eiji
authors.initials: E
authors.lastname: Hirai
authors.forename: Kozo
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Noriaki
authors.initials: N
authors.lastname: Yamamoto
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Yamashita
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Kounoe
authors.forename: Yoshihide
authors.initials: Y
authors.lastname: Kondo
authors.forename: Hirotoshi
authors.initials: H
authors.lastname: Yonemasu
authors.forename: Tetsu
authors.initials: T
authors.lastname: Takahashi
authors.forename: Hideo
authors.initials: H
authors.lastname: Kurokawa
mesh_terms: D000368:Aged; D002280:Basal Cell Carcinoma / Q000473:pathology*; D005887:Gingival Neoplasms / Q000473:pathology*; D006801:Humans; D008297:Male; D008339:Mandibular Neoplasms / Q000473:pathology*; D008875:Middle Aged