Present address: Section of Equine Medicine, Companion Animal Clinical Studies, Faculty of Veterinary Science, Bag X04, Onderstepoort, 0110, South Africa.
The use of nuclear imaging for a mixed C cell microfollicular carcinoma of the thyroid gland in a mature horse
Version of Record online: 9 APR 2012
© 2012 EVJ Ltd
Equine Veterinary Education
Volume 25, Issue 3, pages 118–125, March 2013
How to Cite
Saulez, M. N., Viljoen, A., Kafka, U., Rubio-Martinez, L., van Wilpe, E. and Steyl, J. (2013), The use of nuclear imaging for a mixed C cell microfollicular carcinoma of the thyroid gland in a mature horse. Equine Veterinary Education, 25: 118–125. doi: 10.1111/j.2042-3292.2012.00405.x
- Issue online: 31 JAN 2013
- Version of Record online: 9 APR 2012
A 15-year-old Boerperd stallion presented for thyroid enlargement associated with inappetance. Ultrasonographic examination of the thyroid gland revealed an enlarged left lobe, which, on cytological examination, contained numerous anaplastic cells. A mixed C cell microfollicular thyroid carcinoma was diagnosed following histopathological examination of the excisional biopsy specimen. In order to determine metastasis, pulmonary radiographs revealed a poorly-marginated soft tissue opacity caudo-dorsal to the cardiac silhouette. Thyroid and pulmonary scintigraphy was performed comparing 99mTc-sestamibi with 99mTc-pertechnetate and no metastasis was detectable. Following hemithyroidectomy, the stallion made a full recovery without the need for neoadjuvant chemotherapy. Six months later, repeated thyroid and pulmonary scintigraphy using 99mTc-sestamibi was normal.