Patient Education - Lung Cancer Program at UCLA
yourself about lung cancer:
Metastatic brain tumor
A metastatic brain tumor is brain cancer that has spread from another part of
Brain tumor - metastatic (secondary); Cancer - brain tumor (metastatic)
Many tumor or cancer types can spread to the brain, the most common being lung
cancer, breast cancer, melanoma, kidney cancer, bladder cancer, certain sarcomas,
testicular and germ cell tumors, and a number of others. Some types of cancers only
spread to the brain infrequently, such as colon cancer, or very rarely, such as prostate
Brain tumors can directly destroy brain cells, or they may indirectly damage cells
by producing inflammation, compressing other parts of the brain as the tumor grows,
inducing brain swelling, and causing increased pressure within the skull.
Metastatic brain tumors are classified depending on the exact site of the tumor
within the brain, type of tissue involved, original location of the tumor, and other
factors. Infrequently, a tumor can spread to the brain, yet the original site or
location of the tumor is unknown. This is called cancer of unknown primary (CUP)
Metastatic brain tumors occur in about one-fourth of all cancers that metastasize
(spread through the body). They are much more common than primary brain tumors. They
occur in approximately 10-30% of adult cancers.
- Headache -- recent, persistent, and a new type for the person
- Vomiting -- with or without nausea
- Personality changes
- Emotional instability, rapid emotional changes
- Memory loss, impaired judgment, calculating deficiencies
- Seizures -- new for the person
- Vision changes -- double vision, decreased vision
- Changes in sensation of a body area
- Weakness of a body area
- Speech difficulties
- Decreased coordination, clumsiness, falls
- Fever (sometimes)
- General ill feeling
- Pupils of eyes are a different size
Note: The specific symptoms vary. The symptoms commonly seen with most types
of metastatic brain tumor are those caused by increased pressure in the brain.
Exams and Tests
An examination reveals neurologic changes that are specific to the location of the
tumor. Signs of increased pressure within the skull are also common. Some tumors
may not show symptoms until they are very large. Then, they suddenly cause rapid
decline in the person's neurologic functioning.
The original (primary) tumor may already be known, or it may be discovered after
an examination of tumor tissues from the brain indicates that it is a metastatic
type of tumor.
- A head CT scan or MRI of the head can confirm the diagnosis of brain tumor and
identifies the location of the tumor. MRI is usually more sensitive for finding tumors
in the brain.
- Cerebral angiography is occasionally performed. It may show a space-occupying
mass, which may or may not be highly vascular (filled with blood vessels).
- A chest x-ray; mammogram ; CT scans of the chest, abdomen and pelvis; and other
tests are performed to look for the original site of the tumor.
- An EEG may reveal abnormalities.
- An examination of tissue removed from the tumor during surgery or CT scan-guided
biopsy is used to confirm the exact type of tumor. If the primary tumor can be located
outside of the brain, the primary tumor is usually biopsied rather than the brain
- A lumbar puncture (spinal tap) is sometimes also performed to test the cerebral
Treatment depending on the size and type of the tumor, the initial site of the
tumor, and the general health of the person. The goals of treatment may be relief
of symptoms, improved functioning, or comfort.
Surgery may be used for metastatic brain tumors when there is a single lesion
and when there is no cancer elsewhere in the body. Some may be completely removed.
Tumors that are deep or that infiltrate brain tissue may be debulked (removing much
of the tumor's mass to reduce its size).
Surgery may reduce pressure and relieve symptoms in cases when the tumor cannot
be removed. Radiation therapy may be advised for tumors that are sensitive to radiation.
Medications may include the following:
- Corticosteroids such as dexamethasone to reduce brain swelling
- Osmotic diuretics such as urea or mannitol to reduce brain swelling
- Anticonvulsants such as phenytoin to reduce seizures
- Pain medication
- Antacids or antihistamines to control stress ulcers
When multiple metastases (widespread cancer) are discovered, treatment may focus
primarily on relief of pain and other symptoms.
Comfort measures, safety measures, physical therapy, occupational therapy, and
other interventions may improve the patient's quality of life. Legal advice may be
helpful in forming advanced directives, such as power of attorney, in cases where
continued physical or intellectual decline is likely.
For additional information, see cancer resources.
In general, the probable outcome is fairly poor. For many people with metastatic
brain tumors, the cancer spreads to other areas of the body. Death often occurs within
- Brain herniation (fatal)
- Permanent, progressive, profound neurologic losses
- Loss of ability to interact
- Loss of ability to function or care for self
When to Contact a Medical Professional
Call your health care provider if you develop a persistent headache that is
new or different for you.
Call your provider or go to the emergency room if you or someone else suddenly
develops stupor, vision changes, or speech impairment, or has seizures that are new
Review Date: 9/11/2006
Reviewed By: Rita Nanda, M.D., Department of Medicine, Section of Hematology/Oncology,
University of Chicago Medical Center, Chicago, IL. Review provided by VeriMed Healthcare
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