After induction of anesthesia by the anesthesia colleagues, the tracheoscopy is performed with 0 degree optics. Here the vocal fold level is free of irritation, the trachea up to the carina is inconspicuous. Now enter with the esophagogastroscope under dental protection. The esophageal mucosa and gastric mucosa are unremarkable. No evidence of tumor growth. Now enter under dental protection with the size C small bore tube and inspect the oral vestibule and oral cavity. Here the previously described exophytic tumor of the dorsum of the tongue on the left can be seen, approx. 2.5 x 1.5 cm in size, palpatorily it crosses the midline. The remaining mucosa of the oral cavity and oropharynx is unremarkable. The base of the tongue on the right is scarred without irritation. The piriform sinus can be freely unfolded on both sides, the esophageal entrance is also inconspicuous. No evidence of tumor growth in the hypopharynx and larynx - smooth, irritation-free mucosa on all sides. Now cut around the tumor with the electric needle with a safety distance of approx. 3 mm to the muscle fibers. Cut the muscle fibers of the back of the tongue using bipolar coagulation and the scissors. Suture marking of the tumor anterior long-long and medial short-short. Finally, removal of the tumor under bipolar coagulation. Now take circular marginal samples and a marginal sample of the base of the tongue - these go to the frozen section. After telephone consultation with the pathology department, the margins are R0. Repeated precise hemostasis using bipolar coagulation and readaptation and multiple wound closure using PDS 4 sutures.