A pituitary gland is a small, pea-sized gland that sits just next to the brain stem. They are normally benign and slow growing, and they rarely spread to other parts of the body. They cause a range of symptoms depending on the hormone affected – including abnormal quantities of oestrogen and testosterone. They are often only diagnosed as a result of having eliminated all other possibilities. Tumours will normally be diagnosed with either a CT scan or an MRI scan to spot the tumour in the brain. After that the tumour must be removed surgically (followed by a course of radiotherapy) or medication must be administered to block the tumour from releasing certain hormones.
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