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1.

Lhermitte-Duclos disease

A benign, WHO grade I cerebellar mass, which occurs in young adults and is composed of dysplastic ganglion cells. It is the major CNS manifestation of Cowden disease, an autosomal dominant condition that causes a variety of hamartomas and neoplasms. (from WHO) [from NCI]

MedGen UID:
140251
Concept ID:
C0391826
Congenital Abnormality; Disease or Syndrome; Neoplastic Process
2.

Cowden syndrome 1

The PTEN hamartoma tumor syndrome (PHTS) includes Cowden syndrome (CS), Bannayan-Riley-Ruvalcaba syndrome (BRRS), PTEN-related Proteus syndrome (PS), and Proteus-like syndrome. CS is a multiple hamartoma syndrome with a high risk for benign and malignant tumors of the thyroid, breast, and endometrium. Affected individuals usually have macrocephaly, trichilemmomas, and papillomatous papules, and present by the late 20s. The lifetime risk of developing breast cancer is 85%, with an average age of diagnosis between 38 and 46 years. The lifetime risk for thyroid cancer (usually follicular, rarely papillary, but never medullary thyroid cancer) is approximately 35%. The risk for endometrial cancer may approach 28%. BRRS is a congenital disorder characterized by macrocephaly, intestinal hamartomatous polyposis, lipomas, and pigmented macules of the glans penis. PS is a complex, highly variable disorder involving congenital malformations and hamartomatous overgrowth of multiple tissues, as well as connective tissue nevi, epidermal nevi, and hyperostoses. Proteus-like syndrome is undefined but refers to individuals with significant clinical features of PS who do not meet the diagnostic criteria for PS. [from GeneReviews]

MedGen UID:
833619
Concept ID:
CN072330
Disease or Syndrome

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