title: Primary intraosseous squamous cell carcinoma derived from a maxillary cyst: A case report and literature review.
abstract: Primary intraosseous squamous cell carcinoma (PIOSCC) is a rare malignant central jaw tumor derived from odontogenic epithelial remnants. PIOSCC predominantly affects the mandible, although both jawbones may be involved. This case report describes a PIOSCC type 2 of the maxilla in a 37-year-old man, treated by partial maxillectomy. Histopathologically, the tumor was diagnosed as PIOSCC derived from an odontogenic cyst. Postoperatively, the patient has been followed up for 53 months, with no recurrence of the disease. We herein describe the clinical details, treatment results and histopathological characteristics of a rare case of PIOSCC derived from a maxillary odontogenic cyst with reference to the relevant literature.
authors.affiliation: Division of Maxillofacial and Neck Reconstruction, Department of Maxillofacial Reconstruction and Function, Maxillofacial Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8549, Japan.
authors.forename: Takuma
authors.initials: T
authors.lastname: Morita
authors.affiliation: Department of Dentistry and Oral Surgery, NTT Medical Center, Tokyo 141-8625, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Yamashiro
authors.affiliation: Section of Oral Pathology, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8549, Japan.
authors.forename: Kou
authors.initials: K
authors.lastname: Kayamori
authors.affiliation: Department of Dentistry and Oral Surgery, NTT Medical Center, Tokyo 141-8625, Japan.
authors.forename: Miho
authors.initials: M
authors.lastname: Mizutani
authors.affiliation: Division of Maxillofacial and Neck Reconstruction, Department of Maxillofacial Reconstruction and Function, Maxillofacial Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8549, Japan.
authors.forename: Koichi
authors.initials: K
authors.lastname: Nakakuki
authors.affiliation: Division of Maxillofacial and Neck Reconstruction, Department of Maxillofacial Reconstruction and Function, Maxillofacial Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8549, Japan.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Michi
authors.affiliation: Division of Maxillofacial and Neck Reconstruction, Department of Maxillofacial Reconstruction and Function, Maxillofacial Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8549, Japan.
authors.forename: Narikazu
authors.initials: N
authors.lastname: Uzawa
authors.affiliation: Department of Diagnostic Oral Pathology, Division of Oral Health Science, Oral Restitution, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8549, Japan.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Izumo
authors.affiliation: Division of Maxillofacial and Neck Reconstruction, Department of Maxillofacial Reconstruction and Function, Maxillofacial Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8549, Japan.
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Harada
keywords: maxilla; odontogenic cyst; primary intraosseous squamous cell carcinoma