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囊腺癌(又称圆柱瘤)最常发生于大涎腺(占所有腮腺肿瘤的5%左右,占颌下腺肿瘤的10~15%)以及口腔(特别是硬腭)与上呼吸道的小涎腺,偶可见于鼻窦、泪腺,气管、主支气管以及喉。已往共报导60例原发性喉囊腺癌,根据其中部份病例的资料,男女之比为2∶1.5;年龄分布从29—75岁,以50—60岁最多见;90%以上发源于声门上或声门下,与喉鳞癌的发生部位截然不同,而与小涎腺型的粘膜浆液粘液腺的分布相符。声门下肿瘤获诊断时往往已属晚期,并有气道阻塞表现、其声嘶多由于肿瘤侵犯所致的声
Cystic adenocarcinoma (also known as cystic tumor) occurs most often in the salivary glands (about 5% of all salivary gland tumours, 10 to 15% of submandibular gland tumours) and the small salivary glands of the oral cavity (especially hard palate) and the upper respiratory tract. Occasions can be found in the sinuses, lacrimal glands, trachea, main bronchus and larynx. A total of 60 cases of primary larynxcarcinoma of the larynx have been reported in the past. According to the data of some cases, the ratio of male to female is 2:1.5; the age distribution ranges from 29-75 years old to 50-60 years old; more than 90% originates from Under the glottis or glottis, it is distinct from the site of laryngeal squamous cell carcinoma, which is consistent with the distribution of mucous glands in the mucous membrane of small salivary glands. Subglottic tumors are often diagnosed late and have airway obstruction, and their voice is often due to tumor invasion.