Pineal cysts: Symptoms, treatment, and more
Pineal cysts can occur in the brain’s pineal gland. While most people with pineal cysts never experience symptoms, some may develop headaches, vision changes, or sleep disturbances.
Pineal cysts are capsules of tissue that develop in the pineal gland and are typically harmless. They are usually discovered during brain imaging, as incidental findings when people undergo scans for unrelated reasons.
Most pineal cysts are small and do not cause symptoms. However, larger cysts may cause headaches or other neurological symptoms.
The use of binary terms such as “male” and “female” or “men” and “women” in this article reflects the language of the sources we’ve used.
Unless otherwise noted, it’s unclear whether the research we reference included participants with expansive gender identities.
A pineal cyst is a fluid-filled sac that develops in the pineal gland, a small endocrine gland situated deep within the center of the brain. The pineal gland produces melatonin, a hormone that helps regulate the sleep-wake cycle.
These cysts contain cerebrospinal fluid and are typically small, measuring less than 1 centimeter in diameter. Pineal cysts are relatively common and usually benign, meaning they are noncancerous. A 2023 study of 994 healthy individuals found that 37.5% had pineal cysts on brain imaging.
Many healthcare professionals discover pineal cysts incidentally during brain imaging performed for unrelated reasons.
Most people with pineal cysts do not experience symptoms. When symptoms do occur, they can vary depending on the cyst’s size and location. The most common symptoms include:
Occasionally, a cyst may block the flow of cerebrospinal fluid, leading to fluid buildup and increased pressure. This is hydrocephalus. Symptoms of hydrocephalus
The relationship between cyst size and symptoms is not always consistent. Some small cysts cause symptoms, while some larger cysts do not.
Anyone experiencing severe or sudden neurological symptoms should seek emergency medical care.
Evidence suggests that pineal cysts form during the teenage years, grow through young adulthood, and may shrink later in life.
Additionally, as pineal cysts are
Treatment for pineal cysts depends on whether they cause symptoms. Doctors consider the cyst’s size and each person’s individual situation when deciding on the best approach.
For cysts that don’t cause symptoms, doctors typically recommend monitoring with periodic brain scans. Surgery is for cysts that cause symptoms.
Healthcare professionals offer surgery to carefully selected people after ruling out other treatments and causes of symptoms.
The outlook for people with pineal cysts is generally excellent, especially when cysts are small and asymptomatic.
Most pineal cysts remain stable over time. A long-term study following individuals with a pineal cyst for more than 9 years found that only 3 of the patients experienced cyst enlargement, while 75% remained the same size or showed shrinkage.
When a person has surgical treatment for cysts, they mostly experience
There is no known way to prevent pineal cysts from forming. Because doctors do not fully understand what causes them, prevention is not possible.
For people diagnosed with a pineal cyst, the focus is on monitoring and managing the cyst. This may involve attending follow-up imaging appointments, monitoring for new or worsening symptoms, managing current symptoms, and keeping doctors informed about any changes in health.
A pineal cyst is a fluid-filled sac in the pineal gland of the brain. These cysts are usually benign and cause no symptoms. Many healthcare professionals discover them by chance during brain scans and stay the same size over time.
People only require treatment if the cyst causes problems, such as headaches or changes in vision. Surgery can effectively treat symptomatic cysts. The outlook for people with pineal cysts is generally excellent.