This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
Which of the following is not included in Sipple's syndrome : 
Select and explain. 
A. Pheochromocytoma, B. Medullary carcinoma thyroid, C. Hyperthyroidism, D. Hyperparathyroidism
C: Hyperthyroidism
Answer: C: Hyperthyroidism 
Explanation: Ans. is 'c' Hyperthyroidism Men type 2A syndrome is known as Sipple's syndrome. It includes-Medullary Ca thyroidPheochromocytomaParathyroid adenomaRemember the features of the three types of MEN syndrome Men I(Wermer syndrome)Men IIASipple's syndromeMen II BPituitaryAdenoma- ParathyroidHyperplasia, adenomaHyperplasia, AdenomaHyperplasiaPancreatic isletsHyperplasia, adenoma, carcinoma AdrenalCortical hyperplasiaPheochromocytomaPheochromocytoma,ThyroidC Cell hyperplasiaMedullary Ca thyroidMedullary Ca thyroidOther features Mucocutaneous ganglioneuroma Marfanoid habitus