The patient is clinically suspected of having a tongue margin carcinoma on the left side. Condition after panendoscopy and PE <2019>. Sampling revealed a verrucous leukoplakia of the left tongue margin. The clinical diagnosis of carcinoma could not be confirmed during sampling. If the clinical suspicion remains high, there is now an indication for a generous biopsy. This procedure was discussed in detail with the patient. After being informed accordingly, the patient had ample opportunity to ask questions about the explained procedure.