Hamartoma Syndrome, Multiple

**Definition:** A hereditary disease characterized by multiple ectodermal, mesodermal, and endodermal nevoid and neoplastic anomalies. Facial trichilemmomas and papillomatous papules of the oral mucosa are the most characteristic lesions. Individuals with this syndrome have a high risk of BREAST CANCER; THYROID CANCER; and ENDOMETRIAL CANCER. This syndrome is associated with mutations in the gene for PTEN PHOSPHATASE.

**Tree numbers:** - C04.445.435 - C04.651.435 - C04.700.435 - C16.320.700.435

**Synonyms:** - Cowden Disease - Cowden Syndrome - Cowden's Disease - Cowden's Syndrome - Multiple Hamartoma Syndrome