men 2a การใช้

• There are three subtypes based on clinical presentation : MEN 2A, MEN 2B, and familial medullary thyroid carcinoma ( FMTC ).
• The Arizona Interscholastic Association executive board will consider a proposal on Nov . 16 that could create an 11-man 2A-1A football conference for schools falling into the 249-150 enrollment range.
• In all cases, the disease is idiopathic, but is thought to involve inactivation of tumor suppressor genes ( Menin gene in MEN1 ), or involve gain of function mutations ( RET proto-oncogene MEN 2a ).
• Without thyroidectomy, almost all patients with MEN2B develop medullary thyroid cancer, in a more aggressive form than MEN 2A . The ideal age for surgery is 4 years old or younger, since cancer may metastasize before age 10.
• In 1974 Sizemore " et al . " showed that the MEN 2 category included two groups of patients with MTC and pheochromocytoma : one with parathyroid disease and a normal appearance ( MEN 2A ) and the other without parathyroid disease but with mucosal neuromas and mesodermal abnormalities ( MEN 2B ).