de Oliveira Letícia B, Santos Willian H M, de Araújo Alessandra V, Nepomuceno Anelise C, Ecco Roselene
J Zoo Wildl Med. 2017 Jun;48(2):559-562. doi: 10.1638/2016-0262R1.1.
A 2-mo-old, female blue-and-yellow macaw (Ara ararauna) presented with severe abdominal distension, pain, and respiratory distress. Ultrasonographic examination detected a heterogeneous mass with multiple anechoic areas, compatible with a multilocular cyst, occupying most of the coelomic cavity. Postmortem examination revealed a mass of 12.0 × 8.5 × 5.0 cm, which had an irregular surface and was connected by a pedicle to the ileum. This mass compressed and displaced the liver, proventriculus, gizzard, and intestines cranially to the left. The cut surface was lobulated, gray-white, mildly firm or soft, and was interspersed with multiple cysts filled with viscous and opaque liquid. Microscopically, it was composed of well- differentiated embryonic tissues from the endoderm, mesoderm, and ectoderm; therefore, it was diagnosed as a mature teratoma, which was theorized to have originated from Meckel's diverticulum. This study is the first, to the authors' knowledge to report a case of a teratoma in a blue-and-yellow macaw.
一只2个月大的雌性蓝黄金刚鹦鹉（Ara ararauna）出现严重腹胀、疼痛和呼吸窘迫症状。超声检查发现一个具有多个无回声区的异质性肿块，与多房囊肿相符，占据了大部分体腔。尸检发现一个大小为12.0×8.5×5.0 cm的肿块，其表面不规则，通过蒂与回肠相连。该肿块将肝脏、腺胃、肌胃和肠道向头侧和左侧挤压并移位。切面呈分叶状，灰白色，质地轻度坚硬或柔软，散在多个充满黏稠不透明液体的囊肿。显微镜下，它由来自内胚层、中胚层和外胚层的分化良好的胚胎组织组成；因此，诊断为成熟畸胎瘤，据推测其起源于梅克尔憩室。据作者所知，本研究首次报道了蓝黄金刚鹦鹉发生畸胎瘤的病例。
