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Items: 9

1.

Multiple endocrine neoplasia, type 2a

Multiple endocrine neoplasia type 2 (MEN 2) is classified into three subtypes: MEN 2A, FMTC (familial medullary thyroid carcinoma), and MEN 2B. All three subtypes involve high risk for development of medullary carcinoma of the thyroid (MTC); MEN 2A and MEN 2B have an increased risk for pheochromocytoma; MEN 2A has an increased risk for parathyroid adenoma or hyperplasia. Additional features in MEN 2B include mucosal neuromas of the lips and tongue, distinctive facies with enlarged lips, ganglioneuromatosis of the gastrointestinal tract, and a "marfanoid" habitus. MTC typically occurs in early childhood in MEN 2B, early adulthood in MEN 2A, and middle age in FMTC. [from GeneReviews]

MedGen UID:
9958
Concept ID:
C0025268
Neoplastic Process
2.

McCune-Albright syndrome

Fibrous dysplasia/McCune-Albright syndrome (FD/MAS), caused by an early embryonic postzygotic somatic activating pathogenic variant in GNAS (encoding the cAMP pathway-associated G-protein, Gsa), is characterized by involvement of the skin, skeleton, and certain endocrine organs. However, because Gsa signaling is ubiquitous additional tissues may be affected. Café au lait skin macules are common and are usually the first manifestation of the disease, apparent at or shortly after birth. Fibrous dysplasia (FD), which can involve any part and combination of the craniofacial, axial, and/or appendicular skeleton, can range from an isolated, asymptomatic monostotic lesion discovered incidentally to a severe disabling polyostotic disease involving practically the entire skeleton and leading to progressive scoliosis, facial deformity, and loss of mobility, vision, and/or hearing. Endocrinopathies include: Gonadotropin-independent precocious puberty resulting from recurrent ovarian cysts in girls and autonomous testosterone production in boys; Testicular lesions with or without associated gonadotropin-independent precocious puberty; Thyroid lesions with or without non-autoimmune hyperthyroidism; Growth hormone excess; FGF23-mediated phosphate wasting with or without hypophosphatemia in association with fibrous dysplasia; and Neonatal hypercortisolism. The prognosis for individuals with FD/MAS is based on disease location and severity. [from OMIM]

MedGen UID:
69164
Concept ID:
C0242292
Disease or Syndrome
3.

Hypocalciuric hypercalcemia, familial, type 1

Familial hypocalciuric hypercalcemia (HHC) is a heritable disorder of mineral homeostasis that is transmitted as an autosomal dominant trait with a high degree of penetrance. HHC is characterized biochemically by lifelong elevation of serum calcium concentrations and is associated with inappropriately low urinary calcium excretion and a normal or mildly elevated circulating parathyroid hormone (PTH; 168450) level. Hypermagnesemia is typically present. Individuals with HHC are usually asymptomatic and the disorder is considered benign. However, chondrocalcinosis and pancreatitis occur in some adults (summary by Hannan et al., 2010). Genetic Heterogeneity of Hypocalciuric Hypercalcemia Familial hypocalciuric hypercalcemia type II (HHC2; 145981) is caused by mutation in the GNA11 gene (139313) on chromosome 19p13, and HHC3 (600740) is caused by mutation in the AP2S1 gene (602242) on chromosome 19q13. [from OMIM]

MedGen UID:
369200
Concept ID:
C1809471
Disease or Syndrome
4.

Hyperparathyroidism 2

The spectrum of CDC73-related disorders includes the following phenotypes: Hyperparathyroidism-jaw tumor syndrome (HPT-JT). Parathyroid carcinoma. Familial isolated hyperparathyroidism (FIHP). Primary hyperparathyroidism, the main finding of HPT-JT syndrome, occurs in more than 70% of affected individuals; onset is typically in late adolescence or early adulthood. HPT-JT-associated primary hyperparathyroidism is usually caused by a single parathyroid adenoma. In approximately 10%-15% of cases, primary hyperparathyroidism is caused by parathyroid carcinoma. Ossifying fibromas of the mandible or maxilla, also known as cementifying fibromas and cemento-ossifying fibromas, occur in 30%-40% of individuals with HPT-JT syndrome. Although benign, these tumors can be locally aggressive and may continue to enlarge if not treated. Approximately 20% of individuals with HPT-JT syndrome have kidney lesions, most commonly cysts; renal hamartomas and (more rarely) Wilms tumor have also been reported. Benign and malignant uterine tumors appear to be common in women with HPT-JT syndrome. [from GeneReviews]

MedGen UID:
310065
Concept ID:
C1704981
Neoplastic Process
5.

Parathyroid carcinoma

The spectrum of CDC73-related disorders includes the following phenotypes: Hyperparathyroidism-jaw tumor syndrome (HPT-JT). Parathyroid carcinoma. Familial isolated hyperparathyroidism (FIHP). Primary hyperparathyroidism, the main finding of HPT-JT syndrome, occurs in more than 70% of affected individuals; onset is typically in late adolescence or early adulthood. HPT-JT-associated primary hyperparathyroidism is usually caused by a single parathyroid adenoma. In approximately 10%-15% of cases, primary hyperparathyroidism is caused by parathyroid carcinoma. Ossifying fibromas of the mandible or maxilla, also known as cementifying fibromas and cemento-ossifying fibromas, occur in 30%-40% of individuals with HPT-JT syndrome. Although benign, these tumors can be locally aggressive and may continue to enlarge if not treated. Approximately 20% of individuals with HPT-JT syndrome have kidney lesions, most commonly cysts; renal hamartomas and (more rarely) Wilms tumor have also been reported. Benign and malignant uterine tumors appear to be common in women with HPT-JT syndrome. [from GeneReviews]

MedGen UID:
146361
Concept ID:
C0687150
Neoplastic Process
6.

Hypophosphatemic rickets and hyperparathyroidism

MedGen UID:
383131
Concept ID:
C2677524
Disease or Syndrome
7.

Nephropathy deafness hyperparathyroidism

MedGen UID:
340569
Concept ID:
C1850553
Disease or Syndrome
8.

Hyperparathyroidism, neonatal self-limited primary, with hypercalciuria

MedGen UID:
344611
Concept ID:
C1855924
Disease or Syndrome
9.

Hyperparathyroidism

MedGen UID:
504623
Concept ID:
CN000789
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