Update about canine hypothyroidism and feline hyperthyroidism

This clinical manual on thyroid gland conditions offers an update on the concepts and clinical reality of canine hypothyroidism and feline hyperthyroidism, two processes that have been the subject of much case-based reasoning.

Table of Contents

1.	General thyroid gland concepts
	Synthesis of thyroid hormones 
	Regulation of the synthesis and release of thyroid hormones
	Hormone transport
	Function of thyroid hormones
2.	Canine hypothyroidism
	Types and causes of hypothyroidism
		Hypothyroidism in young dogs
		Hypothyroidism in adult dogs
	Diagnosis
	Clinical signs
		Skin disorders
		Neuromuscular disorders
		Cardiac abnormalities
		Reproductive disorders
		Other clinical signs
	Diagnostic process
		Complete blood count and biochemical analysis
		Thyroid function tests
		Ultrasound evaluation
		L-thyroxine treatment as a diagnostic method 
	Treatment of hypothyroidism
		Dose
		Monitoring
		Side effects
	References
3.	Thyroid tumours and hyperthyroidism in dogs
	Incidence and types of thyroid tumours
	Clinical signs and diagnostic approach
	Treatment and prognosis
	References
4.	Feline hyperthyroidism
	Aetiology of hyperthyroidism
	Epidemiology of hyperthyroidism
		Intrinsic factors
		Nutritional factors
		Environmental factors
	Clinical signs of hyperthyroidism
	Diagnosis of hyperthyroidism
		Routine diagnostic tests
		Hormonal tests to confirm the diagnosis
		Diagnostic imaging
	Treatment of hyperthyroidism
		Medical treatment
		Diet
		Radioactive iodine
		Surgical thyroidectomy
		Intrathyroid injection of ethanol
	References