Why does pituitary tumor affect vision




















But it is important to see your healthcare provider if you have these symptoms. Only a healthcare provider can order appropriate labs and imaging and tell if you have a pituitary tumor. Your healthcare provider will ask about your health history and do a physical exam.

You may also need one of these tests:. Treatment will depend on your symptoms, age, and general health. It will also depend on how severe the condition is. Known risk factors for pituitary tumors are linked to inherited genetic syndromes.

These are abnormal changes mutations in certain genes that are passed down from parent to child. These hereditary risks include:. Other rare inherited and non-inherited genetic problems can also raise the risk of pituitary tumors. Changes in the gene AIP can also be a risk factor. These changes can be passed down from a parent.

Or they can occur at some point during your life. No standard screening methods are used to find pituitary tumors in people who are not known to be at increased risk. If you have an inherited condition such as MEN1 syndrome, talk about screening with your healthcare provider. If any of your family members have MEN1 syndrome, you may have regular blood testing to look for abnormal pituitary hormone levels.

These blood tests raise the chances of finding a tumor early so it can be treated. At UC Health, we lead the region in scientific discoveries and embrace a spirit of purpose — offering our patients and their families something beyond everyday healthcare. At UC Health, we offer hope. Pituitary Tumor A pituitary tumor is a tumor that forms in the pituitary gland in the brain, which is located just behind the nose.

Compassionate Healing Starts Here Click below to learn more about where you can find compassionate care. Brain Tumor Center. Learn More. More about these conditions. What are pituitary tumors? Below are the main types of pituitary tumors. Nonfunctional adenomas null cell adenomas These tumors are the most common type.

Prolactin-producing tumors prolactinomas These benign tumors are also common. Growth hormone-producing tumors These tumors make too much growth hormone. It may include: Extra growth in the skull, hands, and feet. Deepened voice. A change in the facial appearance because of extra growth in the facial bones.

A wide spacing of teeth because of the growth of facial bones. Joint pain. Snoring or sleep apnea. Diabetes or impaired glucose tolerance. High blood pressure from enlargement of the heart muscle and fluid retention.

What causes pituitary tumors? What are the symptoms of pituitary tumors? Symptoms caused by tumor pressure Large noncancerous and cancerous pituitary tumors may press on nerves or parts of the brain. This can cause the following symptoms: Double or blurred vision. Loss of side peripheral vision. Sudden loss of sight. Numbness or pain in the face. This may lead to symptoms such as: Upset stomach nausea. Unwanted weight loss or gain. Loss of menstrual periods.

Men having problems keeping an erection impotence. Less interest in sex. Symptoms caused by excess hormones Functional pituitary tumors can cause different symptoms, based on the excess hormone they make.

Pituitary tumors that make growth hormone GH Symptoms caused by having too much GH are different in children than in adults. For children, symptoms include: Rapid growth. Pain in joints. Too much sweating. The neuro-ophthalmic consultation and testing improve surgical planning, patient counseling and potential rehabilitation of visual function. The other essential diagnostic tests are brain and skull base imaging, typically using high field 3Tesla brain, orbital and pituitary MRIs, as well as thin-cut CT scans of the orbits and skull base.

With these essential tests completed, a surgical plan can be recommended. In most instances, for tumors impacting the anterior visual pathways and those causing double vision, keyhole surgery for tumor removal or maximal safe debulking is indicated. The most common approach for such tumors impacting vision is via the nose endoscopic endonasal route , given that this route typically allows such tumors to be removed from under the optic chiasm and optic nerves with minimal or no manipulation and without retracting the brain.

Alternative keyhole routes are the supraorbital craniotomy via the eyebrow, the transorbital route via an eyelid incision or the mini-pterional approach through a small incision along the side of the orbit along the temple area.

The approach used is tailored to the specifics of the tumor type, location and size. At PNI our surgical philosophy is to maximize tumor removal while minimizing risk of collateral damage and complications through experience and use of the best available technology including high-definition, endoscopy, intraoperative navigation and the Doppler probe for blood vessel localization.

Most patients undergoing endonasal or keyhole craniotomy removal of a tumor impacting vision or eye movements are in the hospital for one or two nights and are back to full activities within 3 weeks after surgery. Full recovery may occur within a few days of surgery but in some cases, improvement occurs slowly over months post-surgery. However, for those patients coming in with severe visual deficits, particularly long-standing and associated with atrophy of the optic nerves or chiasm, vision recovery rates are lower and less favorable.

Recovery from double vision occurs less consistently and depends upon many factors including chronicity and tumor type. Strabismus surgery, carried out by our surgeons, is usually successful in reducing the frequency of double vision for patients whose double vision persists. The frequency of follow-up and need for additional therapies depends on many factors, including whether the tumor is benign or malignant and if a complete or subtotal removal is accomplished.

Even patients with what appear to have complete tumor removal, may have early or late recurrences. Thus, we typically follow our patients with regular MRIs and neuro-ophthalmic evaluation and tests every 6 months for at least 2 years post-surgery and then annually for at least 10 years. If tumor regrowth does occur, options include repeat surgery, focused radiation or radiosurgery and, in some instances, targeted therapies or chemotherapy, in some cases, within clinical trials.

These papers highlight the use of various keyhole approaches for such tumors including the endonasal and supraorbital route. Examples of these approaches are also in our keyhole surgery library. Our comprehensive team approach allows patients with brain, skull base and pituitary tumors impacting vision to be evaluated by multiple specialists under one roof in our new PNI Building in Santa Monica.

For example, in one visit, our patients may see Dr. In addition to the optic nerve, which brings vision from the eye to the brain, there are also several other nerves near the pituitary gland that travel to the eyes and help them move normally. If a pituitary tumor pushes one of these nerves, it causes weakness of some of the muscles that move the eye. This problem affects the normal alignment of the eyes, and produces double vision.

The doctor will perform a number of tests to check if a pituitary tumor is affecting vision. The examination will assess visual acuity, color vision, peripheral vision, eye movements, and the appearance of the retina and optic nerve by looking at the back of the eye. To check peripheral vision, an automated test is commonly used, in which the patient pushes a button every time a flash of light is seen.

In many cases, surgery will be necessary to remove as much of the tumor as possible, especially where it is pushing on parts of the visual system the optic nerves and optic chiasm. Some types of pituitary tumors can first be treated with medications that can shrink the tumor, and surgery may not be necessary.

In some cases, radiation therapy can be used to treat the tumor. Eyeglasses do not correct visual loss that occurs when a pituitary tumor has affected the optic nerves or optic chiasm. Eyeglasses are used to focus light in front of the eye. When the optic nerve or chiasm is injured, the problem causing loss of vision is behind the eye.

If a patient has near-sightedness or far-sightedness as a separate problem, glasses can still be used for that reason. Double vision that occurs with abnormal eye movements can be treated in several ways.

One method is to block vision from one eye, so that the brain will no longer see two images. This can be done by wearing an eyepatch or by covering one eyeglass lens with scotch tape. In some cases, if the amount of misalignment of the eyes is very small, prisms can be placed in eyeglasses to shift images and reduce double vision. Finally, if double vision has become a permanent problem without further improvement for about 12 months , then surgery can be performed to adjust the position of the eye muscles.

The goal of this surgery is to reduce double vision when looking straight ahead and down, but double vision may still be present when looking to the sides.



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