Head, Neck, and Thyroid Conditions The following pages link to the US National Cancer Institute website and will open in a new tab/window. Hypopharynx Tumours Larynx Tumours Metastatic Lymph Node Cancer Oral Cavity Tumours Oropharynx (tonsil and tongue base tumours) Paranasal Sinus Tumours Parathyroid Tumours Salivary Gland Tumours Thyroid Tumours