Part of the endocrine system, pituitary tumours can lead to “changes to your eyesight”.
If the pituitary tumour makes hormones, the symptoms will depend on the type of hormone created.
For example, if prolactin is made, it can lead to a loss of sex drive, difficulty getting an erection, and infertility.
“The treatment you need depends on the type of pituitary tumour you have. It also depends on how well you are and your symptoms,” Cancer Research UK adds.