After induction of anesthesia by the anesthesia colleagues, the surgeon positions the patient. Insertion of the B-tube and adjustment of the glottic plane, which is successful. Use of the operating microscope. A submucosally growing, nodular mass is seen directly in the middle of the left vocal fold, which extends slightly in the direction of the morgue sinus. The arytenoid cartilage and the anterior commissure are free. Macroscopically, there is no expansion into the subglottic slope or infiltration of the supraglottis. Now set the CO2 laser to 4 watts and laser out the mass, partially taking along the thyroarytaenoid muscle up to the anterior edge of the vocal process, which is exposed in the anterior region. Separation of the mass to the subglottic slope and removal of the resectate, which is sent for final histology. Now take marginal samples from the wound bed, the morgue sinus in strips, the subglottic slope in strips and anterior posteriorly in the area of the vocal fold level. The frozen section also reveals a carcinoma on the subglottic slope, which is resected with the CO2 laser, taking a resection several mm subglottically and leaving the conus elasticus intact. A new strip-shaped marginal sample is then taken from the subglottic slope, which is indicated as tumor-free in the histological frozen section. Meticulous hemostasis with anticoagulation with ASA and clopidogrel using monopolar coagulation. If the wound is completely dry, the procedure is completed without complications.