The patient has an externally histologically confirmed squamous cell carcinoma of the left edge of the tongue. On palpation, this extends up to the midline. The floor of the mouth and the base of the tongue are not infiltrated. Due to the large extension in the area of the tongue body, there is an indication for resection with possible defect reconstruction. The surgical procedure was discussed in detail with the patient and her family. A panendoscopy performed in domo showed no other suspicious lesions in the area of the upper aerodigestive tract.