Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia, MO.
Veterinary Health Center, College of Veterinary Medicine, University of Missouri, Columbia, MO.
J Vet Diagn Invest. 2021 May;33(3):587-590. doi: 10.1177/1040638721994615. Epub 2021 Feb 15.
A 3-mo-old male llama was examined because of a 4-wk history of lethargy and ill thrift. Clinical examination revealed subcutaneous masses in the left prescapular and right inguinal regions, mild ataxia, a slight head tilt to the right, and right ear droop. The cria died before clinical workup was complete. At autopsy, there was generalized lymphadenomegaly, a hepatic nodule, a midbrain mass causing rostral compression of the cerebellum, and internal hydrocephalus. Microscopic findings included pyogranulomatous lymphadenitis, meningoencephalitis, hepatitis, and bronchopneumonia. Intralesional fungal spherules, most consistent with spp., were identified in the lymph nodes, lung, and brain. Fungal culture, single-nucleotide variation genotyping real-time PCR, and DNA sequencing confirmed . The dam of the cria was native to Arizona and had been moved to Missouri ~2.5 y previously. Agar gel immunodiffusion assay of the herd revealed that only the dam was positive for spp.; 6 herdmates were negative. Computed tomography of the dam revealed multiple nodules within the lungs and liver, which were presumed to be an active coccidioidomycosis infection. This case of systemic coccidioidomycosis in a llama native to Missouri was presumably acquired by vertical transmission from the dam.
一只 3 月龄雄性羊驼因嗜睡和消瘦 4 周就诊。临床检查发现左肩胛前和右腹股沟区有皮下肿块,轻度共济失调,轻微向右转头,右耳下垂。在完成临床检查之前,该幼驼死亡。尸检发现全身淋巴结肿大、肝结节、中脑肿块导致小脑向前受压和脑积水。显微镜下发现化脓性淋巴结炎、脑膜脑炎、肝炎和支气管肺炎。在淋巴结、肺和脑内发现与 spp. 最一致的内生真菌球。真菌培养、单核苷酸变异实时 PCR 基因分型和 DNA 测序证实为 。该幼驼的母驼原产于亚利桑那州,大约 2.5 年前被转移到密苏里州。对畜群进行琼脂凝胶免疫扩散检测显示,只有母驼对 spp. 呈阳性;6 个同群动物均为阴性。对母驼进行计算机断层扫描显示肺部和肝脏内有多个结节,推测为活动性球孢子菌病感染。密苏里州原产的这只羊驼发生全身性球孢子菌病,可能是通过垂直传播从母驼获得的。