First insertion of the Kleinsasser tube size C. Expose the tumor. Cut around the tumor with a safety margin of several mm on all sides. For this purpose, a part of the dorsal pocket fold must be removed for a better overview. Also cranially, above the anterior commissure, a small part of the supraglottic region. This is resected en bloc with the tumor and a short section of the right vocal fold in front. Resection is performed anteriorly, taking the perichondrium with it and exposing the cartilage, also anteriorly on the left. Soft tissue remains on the posterior left. Most of the conus elasticus is removed during the operation. The entire specimen is thread-marked. A marginal sample is taken dorsally from the arytenoid region. Both specimens are sent for frozen section examination. Here the specimen is healthy, as is the marginal specimen. Thus R0 situation. Subsequent careful hemostasis. The procedure is completed when the site is free of bleeding. Removal of the Kleinsasser tube and the suprarenal swab. Removal of the mouthguard. Completion of the procedure without complications. Total cT1a glottic carcinoma on the left. ......................... specimen R0 resected.