Silent pituitary adenoma

A silent pituitary adenoma is a non-cancerous (benign) tumor that grows in the pituitary gland, a small pea-sized gland located at the base of the brain. The pituitary gland is often called the "master gland" because it produces hormones that control many important body functions. What makes these adenomas "silent" is that, unlike other pituitary tumors, they do not cause the body to produce excess hormones that lead to obvious hormonal symptoms. This means they can grow for a long time before being noticed. Many silent pituitary adenomas are discovered by accident when a brain scan (such as an MRI or CT scan) is done for an unrelated reason — these are sometimes called "incidentalomas." Although silent pituitary adenomas do not overproduce active hormones, they can still cause problems as they grow larger. A growing tumor can press on nearby structures, especially the optic nerves (which carry visual information from the eyes to the brain), leading to vision changes. It can also compress the normal pituitary gland tissue, causing it to underperform and produce fewer hormones than the body needs — a condition called hypopituitarism. Patients may experience headaches, fatigue, and various hormonal deficiencies. Treatment depends on the size of the tumor and whether it is causing symptoms. Small tumors that are not causing problems may simply be monitored with regular MRI scans and hormone blood tests. If the tumor grows or causes symptoms, surgery to remove it (usually through the nose, called transsphenoidal surgery) is the most common treatment. In some cases, radiation therapy may be used after surgery if the tumor cannot be completely removed or if it comes back. Hormone replacement therapy may be needed if the normal pituitary function is damaged.

Bring these to your next appointment

• Q1.What is the exact size and location of my pituitary adenoma, and is it pressing on any important structures?,Are any of my hormone levels abnormal, and will I need hormone replacement therapy?,Do I need surgery now, or can we safely monitor the tumor with regular scans?,How often will I need MRI scans and blood tests for monitoring?,What are the risks and benefits of surgery versus continued observation for my specific situation?,If I need surgery, how experienced is the surgical team with pituitary tumor removal?,Should I be tested for any genetic conditions that could be related to my pituitary tumor?

Common questions about Silent pituitary adenoma

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