11. Secretion of the breasts
We mentioned tumors in the sella turcica as one of the causes of visual problems. These are commonly pituitary adenomas and may be further divided into two types: hypersecretory or nonfunctional. The latter would only give out visual problems, but a hypersecretory pituitary adenoma would start synthesizing and releasing to the bloodstream a hormone called prolactin, which causes women to have severe menstruation problems and secretion of their breasts even if they are not pregnant or have not given birth. Higher secretion of prolactin with breast secretion is not necessarily a sign of brain tumors, so if you have experienced this symptom do not conclude anything just yet and go to your doctor for a proper examination of your case.