Schumacher J, Hanselka D V
J Am Vet Med Assoc. 1987 Jul 15;191(2):239-42.
Nasopharyngeal cicatrices were observed endoscopically in 47 horses examined because of abnormal respiratory noises and/or exercise intolerance. A review of these cases revealed a correlation between cicatrization and age, sex, and the presence of other upper airway abnormalities. The age of affected horses ranged from 6 to 21 years, with a mean age of 12.7 +/- 7.8 (+/- 2 SD) years. Females were affected 2.7 times more frequently than males. Abnormalities commonly observed with a nasopharyngeal cicatrix included chondritis of the arytenoid cartilage, epiglottic deformity, and deformity of the guttural pouch openings. The nasopharyngeal cicatrix was responsible for respiratory obstruction in only 3 horses. Treatment for the cicatrix was not performed on any horse in this series. Generalized nasopharyngeal and laryngeal inflammation were postulated as causes of the cicatrices and associated abnormalities.
对47匹因呼吸异常噪音和/或运动不耐受而接受检查的马匹进行了内镜检查，观察到了鼻咽部瘢痕。对这些病例的回顾显示，瘢痕形成与年龄、性别以及其他上呼吸道异常的存在之间存在相关性。受影响马匹的年龄范围为6至21岁，平均年龄为12.7 +/- 7.8（+/- 2标准差）岁。雌性受影响的频率是雄性的2.7倍。与鼻咽部瘢痕同时常见的异常包括杓状软骨炎、会厌畸形和喉囊开口畸形。鼻咽部瘢痕仅导致3匹马出现呼吸阻塞。本系列中没有对任何一匹马进行瘢痕治疗。推测广泛性鼻咽部和喉部炎症是瘢痕形成及相关异常的原因。
