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Last reviewed dd mmm yyyy. Last edited dd mmm yyyy
Pituitary tumours may present because of either their mass their or endocrine effects.
Mass effects are usually due to large tumours and include:
Endocrine effects may be due to oversecretion of specific hormones, usually one, especially caused by small tumours:
Or due to undersecretion of specific hormones, presenting as panhypopituitarism. This may be associated with compression of the pituitary gland from a large tumour, or may result from small tumours.
Pituitary adenomas may also present as pituitary apoplexy.