一、基本情况赤峰市阿鲁科尔沁旗扎斯台公社尚申毛都大队尚申毛都小队的山羊群中自1975年以来相继出现一种鼻腔肿瘤疾病。其临床症状在病的初期仅见从鼻孔流出大量浆液性鼻液;以后逐渐出现呼吸困难,表现为呼吸加快和产生鼻塞音;重症例的鼻骨或额骨等骨骼受侵变软,指压可下陷。甚至可见肿物隆突于皮下;有的病羊眼球突出,视力减退,晚期病羊消瘦,呼吸极度困难。饮食废绝,反刍停止,最后多死于窒息。本病首次发生于1975年,仅在一个羊群中出现一例,以后在1976—1979年期间,发病山羊头数逐年增 I. Basic information A nasal cavity tumor disease has appeared in the goat population of the Shangdu Maodu squadron since the beginning of 1975 in the Shangshang Maodu Brigade of the Zhashangdai Co., Ltd., Arukol Banner, Chifeng City. The clinical symptoms in the early stage of the disease only see a large amount of serous nasal fluid flowing from the nostrils; later there is gradually dyspnea, manifested as rapid breathing and nasal congestion; severe cases such as nasal bone or frontal bone invade soft, finger pressure can be subsidence . Even the tumor can be seen protruding under the skin; some of the diseased sheep have prominent eyes and vision loss, and the advanced diseased sheep are thin and extremely difficult to breathe. The diet was abolished, rumination ceased, and more died of suffocation. The disease first occurred in 1975, only one case occurred in one herd, and during the period from 1976 to 1979, the number of heads of diseased goats increased year by year.