Definition
- Rare multiple neoplasia syndrome associated with distinctive cutaneous lesions
- Inactivating mutations in the protein kinase A type I-alpha regulatory subunit (PRKAR1A) gene
- AD
- Previously called NAME (nevi, atrial myxoma, ephelides) and LAMB (lentigines, atrial myxoma, blue nеvi) syndrome.
Clinical
Cutaneous
- Lentiginous skin pigmentation - 70 to 80 percent of patients. O
- Often have a periorificial distribution and may be found on the lid margin and lacrimal caruncle.
- Dark “ink spot” lentigines
- Multiple blue nеvi
- Cutaneous myxomas.
- Benign dermal tumors presenting as sharply demarcated subcutaneous nodules, a few millimeters to 1.5 cm in diameter
- Primary pigmented nodular adrenocortical disease (ΡPΝAD)
- Testicular large cell calcifying Sertoli tumors
- Pituitary adenomas
- Thyroid adenomas and carcinomas
- Ovarian cysts.
- Cardiac myxomas
- psammomatous melanotic schwannomas
- Breast ductal adenomas
- Osteochondromyxomas