口咽位于软腭与舌骨水平之间,包括腭扁桃体、舌根、软腭及会厌周围。口咽恶性肿瘤占全身恶性肿瘤的1.3％,占头颈恶性肿瘤的4.2％。病理类型以鳞癌多见,次有恶性淋巴瘤、肉瘤及恶性涎腺型肿瘤。腭扁桃体发病率最高。由于口咽解剖隐蔽,毗邻关系复杂,生理功能重要,治疗甚为棘手。40年代前后,主要采用单纯放疗,五年生存率27.3％。 The oropharynx lies between the soft palate and the hyoid bone, including the palatine tonsil, tongue base, soft palate, and epiglottis. Oropharyngeal malignancies account for 1.3% of all malignant tumors and 4.2% of head and neck malignancies. Most of the pathological types were squamous cell carcinomas, followed by malignant lymphoma, sarcoma, and malignant salivary gland tumors. The tonsils have the highest incidence. Due to the concealed oropharynx anatomy, the complex relationship between adjacent organs, and important physiological functions, the treatment is very difficult. Before and after the 40s, radiotherapy was mainly used, with a five-year survival rate of 27.3%.