Head and Neck Cancer Committee (Oropharynx 1/4). Case presentation.

Left, axial contrast-enhanced CT scan: see the primary tumour in the left tonsil and a massive IIA metastatic lymph node, separated by the vascular structures (internal jugular vein and internal and external carotid arteries) in the parapharyngeal fat pad. Right., sagittal CT scan showing the vertical dimension of the primary tumour at the tonsil.

An otherwise healthy, non-smoker patient presents with a poorly differentiated oropharyngeal squamous cell carcinoma, p16+ (VPH+). As the tumour measures more than 4cm, it is a T3, but clinical examination suggests confinement to the tonsil: it is not fixed on palpation, anterior and posterior pillars are not involved, and there is no clinical suspicion that the tumour goes through the upper pharyngeal constrictor muscle.  There is a massive enlarged ipsilateral node, but measuring less than 6cm, and another suspicious node identified through PET-CT imaging.

Therefore, it is staged as T3N1M0 (stage II) VPH+ poorly differentiated squamous cell carcinoma of the oropharynx (left tonsil). Should it be a VPH- tumour, it would have been staged as T3N2bM0 (stage IV). But it is HPV+.

Which are the treatment options? Which one would you advice? Let´s remember that the currently valid NCCN guideline is version 2.2023 (May 15, 2023).

Spoiler. ChatGPT recommends concurrent chemoradiation: “Based on the available evidence and the guidelines, a multimodal approach combining concurrent chemoradiation therapy is recommended as the primary treatment modality for this patient. This approach has demonstrated improved outcomes in OPSCC cases, particularly when combined with cisplatin-based chemotherapy. Surgery may be considered for salvage therapy if necessary. It is essential to consider the patient’s preferences, general health status, and potential treatment-related toxicities when making the final treatment decision.”

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