Prolactinoma

A prolactinoma is a non-cancerous (benign) tumor that develops on your pituitary gland. The pituitary gland is a small, pea-sized gland located at the base of your brain, responsible for producing several important hormones. A prolactinoma specifically causes this gland to produce excessive amounts of a hormone called prolactin, which normally plays a key role in milk production (lactation) and regulates reproductive functions. While the exact cause of a prolactinoma is often unknown, it's important to understand that it is not due to anything you did, nor is it typically inherited. The overproduction of prolactin disrupts the normal balance of other hormones in your body, particularly those involved in reproductive health. Depending on its size, the tumor itself can also put pressure on surrounding brain tissues, leading to additional symptoms. Your lab results, specifically high prolactin levels in your blood, are the primary way a prolactinoma is identified. These tests are essential for confirming the diagnosis and monitoring the condition. Further imaging, such as an MRI, is often performed to locate the tumor and determine its size. Understanding your prolactin levels and the characteristics of the tumor helps your healthcare team develop the most appropriate treatment plan to manage your symptoms and prevent potential complications.