Histopathological and immunohistochemical characterization of a mixed tubule papillary thyroid carcinoma in a Nellore cow
DOI:
https://doi.org/10.24070/bjvp.1983-0246.v17i2p108-111Keywords:
bovine, thyroid carcinoma, histopathology, immunohistochemistryAbstract
Reports on thyroid carcinomas in bovines are scarce. An 18-year-old Nellore cow was referred to a veterinary hospital due to lateral recumbency lasting one day after falling on irregular terrain. The patient was clinically diagnosed with spinal cord injury. Necropsy and histopathology revealed a thyroid tubule papillary carcinoma. Immunohistochemical analysis revealed discrete positive cells for calcitonin, moderately positive cells for thyroid transcription factor 1 (TTF-1), and strongly positive cells for thyroglobulin in the thyroid gland. Thus, this report describes a case of a mixed tubule papillary carcinoma derived from both medullary and follicular cells in a Nellore cow.