Abstract
Spindle cell squamous cell carcinoma is characterized by multiplication of polygonal cells, mainly spindle cells, and is classified as a particular kind of squamous cell carcinoma. We report a rare case of spindle cell squamous cell carcinoma of the mandible that was considered an intraosseous carcinoma.
A 67-year-old man had undergone enucleation of a mandibular tumor （30×15mm radiolucent mass including an impacted third molar）. There had been no abnormal symptoms in the oral mucosa. Pathological examination of the surgical specimen revealed that the lesion was spindle cell squamous cell carcinoma, and so the patient was referred to the Department of Dentistry and Oral Surgery, Shinshu University School of Medicine for further treatment. Elective neck dissection, segmental mandibulectomy, and reconstruction with metal plate and recto-abdominal myocutaneous free flap were carried out, followed by adjuvant chemoradiotherapy. There has been no evidence of recurrence for 5 years.
