Congenital hypothyroidism in dog: case report
Canine congenital hypothyroidism is a rare and underdiagnosed endocrine disorder, their true incidence
is unknown because many dogs with this condition die before reaching three months of age. The disorder
can cause a range of clinical signs as the lack of thyroid hormones on the animal’s body because of low
metabolism signs of multiple organs. Affected dogs may have mental retardation and abnormalities in
skeletal development. Diagnosis is made through the animal’s history, laboratory screening tests added
to the clinical and epidemiological findings and serum levels of thyroid hormones. This paper reports
a case of canine congenital hypothyroidism in a Chow-Chow dog, with one year old, diagnosed at the
Veterinary Hospital of the Federal Rural University of Rio de Janeiro. The animal was submitted to hormone
replacement therapy with levothyroxine Sodium resulting in clinical improvement.
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