What are Prolactinomas?
A prolactinoma is a benign tumor
of the pituitary gland that produces a hormone called prolactin.
It is the most common type of pituitary tumor. Symptoms of prolactinoma
are caused by too much prolactin in the blood (hyperprolactinemia)
or by pressure of the tumor on surrounding tissues.
Prolactin stimulates the breast
to produce milk during pregnancy. After delivery of the baby,
a mother's prolactin levels fall unless she breast feeds her
infant. Each time the baby nurses, prolactin levels rise to
maintain milk production. (see
Prolactinomas - what is a Prolactinoma?)
.