MEN type II syndrome ( Sipple's syndrome )

Pheochromocytoma
Hyperparathyroidism
Medullary carcinoma of thyroid

Recklinghausen's neurofibromatosis

Griffith's syndrome
Pheochromocytoma
Neurofibroma
Duodenal somatostatinoma

Von Hippel Lindau's syndrome

Cerebellar, medullary, spinal hemangioblastomas
Pheochromocytoma
Retinal angioma