Submandibular gland sparing treatment plan. Treatment planning image for a T4N2b right oropharyngeal squamous cell carcinoma involving the lingual and pharyngeal tonsils, sparing the contralateral submandibular gland (cSMG). cSMG in teal. High-dose 70Gy PTV1 in red colorwash and corresponding 95% isodose line in red, 63Gy PTV2 in yellow colorwash and 95% isodose line in yellow, 57Gy PTV3 in orange colorwash and 95% isodose line in orange. Spared cSMG received a mean dose of 33Gy.