The patient has had a scratchy feeling in the throat on the left side for several weeks. The external ENT colleague carried out a test biopsy in case of tonsillar carcinoma and found evidence of basaloid squamous cell carcinoma. Therefore indication for the above procedure. Computed tomography currently shows cN0 neck status (primary in the tonsil cannot be visualized due to artefacts), sonographically at least a nodus on the opposite side on the right in level II.