Department of Veterinary Pathology, Western College of Veterinary Medicine University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4.
Can Vet J. 2022 Mar;63(3):292-296.
Pharyngeal cleft cysts (also called branchial cleft cysts) are rare congenital defects of the pharynx region that appear as soft, fluctuant cystic structures on the ventral neck. These cysts are formed by anomalous regression of the pharyngeal clefts during embryonic development and are lined by pseudostratified columnar to squamous, partially ciliated epithelium on histopathology. Development of these cysts is sporadic, with no currently identified risk factors in veterinary species. The cysts are typically unilateral, and primarily diagnosed in mature animals of various species. The objective of this article is to report 2 cases of bilateral second pharyngeal cleft cysts in 2 calves with no shared pedigree, located on the same farm. To the authors' knowledge, this is the first report of geographically linked second pharyngeal cleft cysts in veterinary species, and the first cases of bilateral cysts in cattle. Key clinical message: Pharyngeal cleft cysts are an important differential for soft, fluctuant, and cystic structures on the ventral neck of all species. These cases are typically unilateral, diagnosed in mature animals and are sporadic with no currently identified risk factors in veterinary species.
咽裂囊肿（也称为鳃裂囊肿）是一种罕见的咽部先天缺陷，表现为颈前柔软、波动的囊性结构。这些囊肿是由于胚胎发育过程中咽裂的异常退化形成的，组织病理学上由假复层柱状至鳞状、部分纤毛上皮衬里。这些囊肿的发生是散发性的，在兽医物种中目前没有确定的危险因素。囊肿通常为单侧，主要在不同物种的成年动物中诊断。本文的目的是报告 2 例无共同谱系、位于同一农场的双侧第二咽裂囊肿。据作者所知，这是兽医物种中首例具有地理相关性的第二咽裂囊肿的报道，也是牛双侧囊肿的首例报告。关键临床信息：咽裂囊肿是所有物种颈前柔软、波动和囊性结构的重要鉴别诊断。这些病例通常为单侧，在成年动物中诊断，呈散发性，在兽医物种中目前没有确定的危险因素。
