Spindle cell carcinoma is a rare neoplasm of the oral cavity. It difficult consists mainly of spindle cells but main various contain other types of tumor cells. Diagnosis is often.
In this paper, a spindle cell carcinoma arising in the gingiva of the left impacted third molar in a 64 year-old man is reported.
After chemotherapy, radiotherapy and curative resection of the primary tumor, a second tumor developed at the same site of the contralateral gingiva.
Based on immunohistochemical and electron microscopic findings, these tumors were diagnosed as spindle cell carcinomas.