Juvenile Hyperthyroidism in a Cat

Gordon J.M., Ehrhart E.J., Sisson D.D., et al.

J Am Anim Hosp Assoc, 2003. 39(1): p.67-71.


An 8-month-old, male domestic shorthaired cat presented for chronic weight loss, intermittent dyspnea, chronic diarrhea, hyperactivity, and weakness. The cat had a palpable thyroid nodule and increased serum total thyroxine and 3,5,3′ triiodothyronine levels. The cat was diagnosed with hyperthyroidism, and a unilateral thyroidectomy was performed followed by radioactive iodine at a later date. The clinical signs resolved following radioactive iodine, and the cat subsequently developed clinical hypothyroidism