Abstract
Adenosquamous carcinoma is a malignant tumor with histological findings of both squamous cell carcinomaand adenocarcinoma. It often arises in the nasal and sinus mucosa of the maxillofacial region. Thirty-sixcases of adenosquamous carcinoma developing from oral mucosa have been reported. However, none of themwere found on the buccal mucosa. We report a case of adenosquamous carcinoma of the buccal mucosa.
The patient was a 64-year-old man; he visited our hospital because of an ulcer of the right side of the buccalmucosa in April 2000.
On initial examination, there was a 12×12mm ulcer which bled easily and was tender and surrounded byinduration (20×20mm). There was no lymphadenopathy in the neck and no radiological abnormality that suggestedbone resorption in the right side of the maxilla or mandible. The tumor was diagnosed as squamous cellcarcinoma on initial biopsy. After preoperative chemotherapy with peplomycin, we resected the tumor. The finalhistopathological diagnosis was adenosquamous carcinoma. Four years have passed since the operation, with noevidence of recurrence or metastasis.
