Smith D F, Gunson D E
J Am Vet Med Assoc. 1977 Jul 1;171(1):64-6.
A branchial cyst in a heifer was removed surgically. Diagnosis was based on clinical signs, analysis of cyst contents, and histologic examination of the cyst wall. Biochemically, the cyst fluid resembled a transudate. The cyst lining consisted of nonciliated, pseudostratified columnar epithelium and pigmented, keratinized, stratified squamous epithelium. The embryologic origin was thought to be endoderm of the 2nd pharyngeal pouch and adjacent ectoderm.
一头小母牛的鳃裂囊肿通过手术切除。诊断基于临床症状、囊肿内容物分析以及囊肿壁的组织学检查。生化分析显示，囊肿液类似漏出液。囊肿内衬由无纤毛的假复层柱状上皮和色素沉着、角化的复层鳞状上皮组成。胚胎学起源被认为是第二咽囊的内胚层和相邻的外胚层。
