First, advance the O° optic through the glottic plane into the trachea. Inconspicuous mucosal conditions in the area of the trachea. Further advancement of the endoscope into the bronchial system, inconspicuous conditions on both sides. Now intubation of the patient. Then inspection of the hypopharynx on both sides, the postcricoid region, the oropharynx, the oral cavity and the nasopharynx. All mucosal conditions were unremarkable. All inspections with the aid of the endoscope or microscope. Now inspection of the larynx. A tumor was found in the area of the left vocal fold, extending from the tip of the arytenoid cartilage to just before the anterior commissure, occupying the entire vocal cord and extending to just before the morgue sinus. The tumor is located strictly on the left side. Beyond that, there are no special features in the subglottis and supraglottis. First, a sample is obtained and sent for frozen section histology. Here the diagnosis of squamous cell carcinoma is made. As a result, the process is resected with a laser from the tip of the arytenoid cartilage to the anterior commissure, including the largest parts of the vocalis muscle. The tumor is removed in the area of the anterior commissure together with the perichondrium, the thyroid cartilage. Deposition of the tumor, careful hemostasis. Obtain two representative marginal samples. Termination of the procedure if conditions are dry overall. A control endoscopy in 6-8 weeks is absolutely indicated.