Tertiary hyperparathyroidism

**Tertiary hyperparathyroidism**
*Classification & external resources*

Thyroid and parathyroid.
ICD-10	E21.
ICD-9	252.0
DiseasesDB	6309

Tertiary hyperparathyroidism is a state of excessive secretion of parathyroid hormone (PTH) after a long period of secondary hyperparathyroidism and resulting in hypercalcemia.

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The basis of treatment is still prevention in chronic renal failure, starting medication and dietary restrictions long before dialysis treatment is initiated. Cinacalcet has greatly reduced the number of patients who ultimately require surgery for secondary hyperparathyroidism, however, approximately 5% of patients do not respond to medical therapy.

When secondary hyperparathyroidism is no longer responsive to treatment by medication, it is called tertiary hyperparathyroidism. The treatment of choice is surgical removal of three and one half parathyroid glands.

v • d • e Endocrine pathology: endocrine diseases (E00-35, 240-259)
Thyroid	Hypothyroidism (Iodine deficiency, Cretinism, Congenital hypothyroidism, Goitre, Myxedema) - Hyperthyroidism (Graves disease, Toxic multinodular goitre, Teratoma with thyroid tissue or Struma ovarii) - Thyroiditis (De Quervain's thyroiditis, Hashimoto's thyroiditis, Riedel's thyroiditis) - Euthyroid sick syndrome
Pancreas	Diabetes mellitus (type 1, type 2, coma, angiopathy, ketoacidosis, nephropathy, neuropathy, retinopathy) - Hypoglycemia - Hyperinsulinism - Zollinger-Ellison syndrome
Parathyroid	Hypoparathyroidism (Pseudohypoparathyroidism) - Hyperparathyroidism (Primary, Secondary, Tertiary)
Pituitary	Hyperpituitarism (Acromegaly, Hyperprolactinaemia, SIADH) - Hypopituitarism (Simmonds' disease/Sheehan's syndrome, Kallmann syndrome, Growth hormone deficiency, Diabetes insipidus) - Adiposogenital dystrophy - Empty sella syndrome
Adrenal	Cushing's syndrome (Nelson's syndrome, Pseudo-Cushing's syndrome) - CAH (due to 21-hydroxylase deficiency) - Hyperaldosteronism (Conn syndrome, Bartter syndrome) - Adrenal insufficiency (Addison's disease) - Hypoaldosteronism
Gonads	ovarian dysfunction (Polycystic ovary syndrome, Premature ovarian failure) - testicular dysfunction (5-alpha-reductase deficiency) - general (Hypogonadism, Delayed puberty, Precocious puberty)
Other	Autoimmune polyendocrine syndrome - Carcinoid syndrome - Short stature (Laron syndrome, Psychogenic dwarfism) - Gigantism - Androgen insensitivity syndrome - Progeria - Multiple endocrine neoplasia (1, 2)