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What is Which is produced by Phaeochromocytoma in M.E.N 2A Sipple syndrome? and explain in detail?
Ans. (a) EpinephrineRef: Robbin's pathology 9th ed. /1134-36* Phaeochromocytoma < 5 cm and associated with MEN 2A can produce epinephrine due to sufficient methy transferase enzyme.* However if phaeochromocytoma > 5 cm and in extradrenal phaeochromocytoma due to absence of methyl trans- ferase enzyme, only nor-epinephrine is produced.