Pharyngoscopy and laryngoscopy: Findings are confirmed. Findings on CT correlated. Now entering with the Kleinsasser tube size B and adjusting the tumor. Tumor is now resected successively with a safety margin of between 0.5 and just under 1 cm. Laterally, the resection extends to the cartilage, anteriorly also dorsally to the arytenoid cartilage, which is resected slightly in the interlaryngeal area. Caudally, the resection extends to the cricoid cartilage. The tumor is removed and resected microscopically with a safety margin. The tumor is suture-marked. Due to the fact that the anterior and posterior margins are somewhat narrower, a glottic, subglottic and supraglottic margin sample is taken from the area of the anterior commissure and the adjacent soft tissue. Also marginal sample dorsally in the area of the arytenoid cartilage and the arytenoid fold transition. In the frozen section, all samples are tumor-free or the edges of the tumor are tumor-free. So R0 situation. Hemostasis follows. In the anterior region, the transverse artery in the area of the conus elasticus had to be bipolized during the resection; this will be repeated. In the dorsal area, the inferior laryngeal artery was treated with clips. No more bleeding here. Most careful hemostasis. No evidence of bleeding on final inspection. Exposure of the cartilage in the area of the anterior commissure and on the left in the entire area. Patient therefore received Sobelin 600 mg i.v. Please continue antibiotics for one week. Patient goes to the recovery ward for monitoring, should remain there for a prolonged period and may be admitted to the intensive care unit for one night. It is essential to plan a follow-up endoscopy in 8-12 weeks.