Endocrine System DiseasesHypogonadismMultiple Endocrine Neoplasia Type 1Multiple Endocrine NeoplasiaMultiple Endocrine Neoplasia Type 2aMultiple Endocrine Neoplasia Type 2bProto-Oncogene Proteins c-retCarcinoma, MedullaryPheochromocytomaGastrinomaAdrenal Gland NeoplasmsParathyroid NeoplasmsHyperparathyroidism, PrimaryEndocrine GlandsEndocrine SystemThyroid NeoplasmsZollinger-Ellison SyndromeEndocrine Gland NeoplasmsGerm-Line MutationHyperparathyroidismPituitary NeoplasmsInsulinomaProto-Oncogene ProteinsEndocrine DisruptorsAdenoma, Islet CellReceptor Protein-Tyrosine KinasesPancreatic NeoplasmsNeuromaThyroidectomyPedigreeChromosomes, Human, Pair 11AdenomaNeuroendocrine TumorsAngiofibromaCarcinoid TumorParathyroidectomyMetanephrineBone Demineralization, PathologicGlucagonomaCalcitoninDuodenal NeoplasmsGenetic TestingHirschsprung DiseaseParathyroid Glandsvon Hippel-Lindau DiseaseMutationDrosophila ProteinsGanglioneuromaProlactinomaParaganglioma