Pituitary disease: An update.

BACKGROUND Pituitary lesions are present in >10% of the population. Approximately one in 1000 people has a symptomatic pituitary tumour, which may cause clinical problems from mass effect, hormonal hypersecretion and impairment of normal pituitary function. OBJECTIVE The aim of this article is to outline the potential causes of a sellar and parasellar mass, with an emphasis on the presenting clinical features and screening investigations that are applicable to doctors working in the primary care setting. DISCUSSION There is a broad range of causes of a sellar/parasellar mass. Pituitary adenomas and Rathke's cleft cysts are the most frequently encountered. Prolactinomas are the most common functioning tumour and tend to present as macroadenomas in men, while hyperprolactinaemia is associated with 15% of secondary amenorrhoea in women. Acromegaly and Cushing's disease are rare but important diagnoses to detect. Pituitary disease is optimally managed in a specialist centre in the context of an established multidisciplinary team.