Associated endocrine disorders include multiple endocrine neoplasia type 2A (MEN2A) (65–67), von Hippel–Lindau (VHL) disease (72, 73), neurofibromatosis type 1 (NF1) (11, 64, 74–77), and Carney Triad (3). This evidence concerns the gene NF1 and multiple endocrine neoplasia type 2.