Mr. <PATIENT_NAME> has a postoperative mandibular carcinoma, which was resected and neck dissection treated by colleagues in oral surgery in 1995, but did not receive adjuvant therapy. The patient now presents with a histologically confirmed carcinoma in situ (grade III intraepithelial neoplasia). Endoscopy revealed a very uneven mucosa, raised above the normal mucosal level, primarily affecting the left pocket fold. Therefore indication for the above mentioned operation.