Camus A C, Burba D J, Valdes M A, Taylor H W
Department of Veterinary Pathology, School of Veterinary Medicine, Louisiana State University, Baton Rouge 70803, USA.
J Am Vet Med Assoc. 1996 Aug 1;209(3):632-3.
A 21-year-old female American Saddle Horse with a prominent swelling on the ventral aspect of the right hemimandible and radiographic evidence of a bone cyst was examined. The cyst cavity was surgically explored and was found to contain mucinous fluid and sheets of keratin. Microscopically, the cyst was lined by well-differentiated squamous epithelium characterized by various degrees of hyperkeratosis and parakeratosis. The stromal component varied from scant areas in which epithelium was closely apposed to bone to wide regions of dense connective tissue that contained fragments of keratin surrounded by foreign-body giant cells. Histologic features were consistent with a diagnosis of intraosseous epidermoid cyst. After curettage of the cyst and repulsion of the second premolar tooth, drainage was established and iodine flushes were begun. Nine months after surgery, drainage was not detectable and size of the hemimandible had decreased by approximately a fourth.
对一匹21岁的美国鞍马进行了检查，该马右侧半下颌腹侧有明显肿胀，影像学检查显示有骨囊肿。对囊肿腔进行了手术探查，发现其中含有黏液性液体和角化层片。显微镜下，囊肿内衬分化良好的鳞状上皮，其特征为不同程度的角化过度和不全角化。间质成分差异较大，从上皮与骨紧密相邻的少量区域到含有被异物巨细胞包围的角蛋白碎片的致密结缔组织广泛区域。组织学特征符合骨内表皮样囊肿的诊断。在刮除囊肿并拔除第二前磨牙后，建立了引流并开始用碘冲洗。术后9个月，未检测到引流，半下颌大小减少了约四分之一。
