title: Primary intraosseous squamous cell carcinoma mimicking periapical disease: a case report.
abstract: Primary intraosseous squamous cell carcinoma (PIOSCC) is a rare carcinoma, which arises within the jaws without connection to the oral mucosa and presumably develops from a remnant of odontogenic epithelium. We present a case of solid type PIOSCC in a 52-year-old male patient complaining of dull pain on his left lower molar. In this case, early stage PIOSCC mimicking a periapical lesion might lead to a one-year delay in treatment due to the misdiagnosis of osteomyelitis after extraction of the third molar. The clinical, radiological, and histologic features are described. In this case, there was initial radiographic evidence for PIOSCC mimicking a periapical lesion. Incautious radiographic interpretation and treatment procedures had delayed the correct diagnosis and resulted in extensive bony destruction during the patient's disease progression.
authors.affiliation: Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyung Hee University, Seoul, Korea.
authors.forename: Yoon-Joo
authors.initials: YJ
authors.lastname: Choi
authors.forename: Song-Hee
authors.initials: SH
authors.lastname: Oh
authors.forename: Ju-Han
authors.initials: JH
authors.lastname: Kang
authors.forename: Hwa-Young
authors.initials: HY
authors.lastname: Choi
authors.forename: Gyu-Tae
authors.initials: GT
authors.lastname: Kim
authors.forename: Jae-Jung
authors.initials: JJ
authors.lastname: Yu
authors.forename: Yong-Suk
authors.initials: YS
authors.lastname: Choi
authors.forename: Eui-Hwan
authors.initials: EH
authors.lastname: Hwang
keywords: Carcinoma, Squamous Cell; Head and Neck Neoplasms; Mandible; Periapical Disease