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The use of nuclear imaging for a mixed C cell microfollicular carcinoma of the thyroid gland in a mature horse
Author(s) -
Saulez M. N.,
Viljoen A.,
Kafka U.,
RubioMartinez L.,
van Wilpe E.,
Steyl J.
Publication year - 2013
Publication title -
equine veterinary education
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 31
eISSN - 2042-3292
pISSN - 0957-7734
DOI - 10.1111/j.2042-3292.2012.00405.x
Subject(s) - medicine , thyroid , horse , pathology , thyroid carcinoma , anatomy , radiology , biology , paleontology
Summary 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 99m Tc‐sestamibi with 99m Tc‐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 99m Tc‐sestamibi was normal.