First tracheoscopy: Unremarkable mucosal conditions on all sides up to the carina. Then MLE: Mucosal conditions in the larynx unremarkable on all sides. Oro-/hypopharyngoscopy: Mucosal conditions in the hypo- and oropharynx unremarkable on all sides, esophageal entrance clear. Tonsil lobe and tongue base free on inspection and palpation. In the area of the vallecula, a cyst of approx. 1.5 cm in size is visible; this is unroofed and a creamy secretion is discharged. Flexible esophagoscopy: Advancement of the esophagoscope into the stomach. No abnormalities on gross examination. No evidence of a second tumor was found in the entire esophageal area on retraction. Then repositioning for tumor resection: holding suture on the tongue. Insertion of a blocker. The tongue margin tumor is seen on the left. This was incised on all sides with a safety margin of 1 cm. The mucosa can be seen medially, which appears somewhat roughened. A resection is therefore performed again. In addition, a medial margin sample was taken. Dorsal to the tumor, there is also a change suspicious of leukoplakia, which cannot be clearly distinguished from tumor growth. Here too, the entire altered area is resected in toto. Both tumor specimens, as well as the marginal specimen, are sent for histology with a thread marker. No evidence of tumor at the tumor margins or in the margin specimen in the frozen section. Therefore R0 resection. Subsequent careful hemostasis and adaptive Vicryl 3/0 single button sutures on the left tongue margin. The procedure was completed without complications.