Gopal Chandra Halder¹, Jay Gopal Ray^1,, Santanu Patsa¹

Adenosquamous carcinoma is a rare malignant tumor with poor prognosis that is characterized histopathologically by the simultaneous presence of distinct areas of adenocarcinoma and squamous cell carcinoma. Until 2004, only 59 cases of adenosquamous carcinoma have been documented in English literatures in the head and neck region since the first one being reported in 1968. The present report is a case of adenosquamous carcinoma in a 75 years old man with a fast enlarging ulcerated lesion on right buccal mucosa. The patient developed trismus due to local infiltration of tumor mass within the muscle with fixation of the skin and a small perforation on the right side of the face. Adenosqamous carcinoma in the oral cavity is not seen frequently. All the reported cases are in the tongue, floor of the mouth and tonsillar palatine region in descending order. This presentation in the buccal mucosa with infiltration up to the skin is in itself significant and rare.

Buccal mucosa, adenosquamous carcinoma, ulcerated lesion, infiltration