Sometimes they're surrounded by a protective sac that makes them easy to remove. Blood tests, a biopsy, or imaging—like an X-ray—can determine if the tumor is benign or malignant.
Doctors may soon be able to use a blood test to distinguish between benign and cancerous tumors in people with NF1. People with an inherited condition known as neurofibromatosis type 1, or NF1, often develop non-cancerous, or benign, tumors that grow along nerves.
Aside from leukemia, most cancers cannot be detected in routine blood work, such as a CBC test. However, specific blood tests are designed to identify tumor markers, which are chemicals and proteins that may be found in the blood in higher quantities than normal when cancer is present.
Tumour marker blood tests
Tumour markers are substances that might be raised if there is a cancer. They're usually proteins. They can be found in the blood, urine or body tissues. You might also hear them called biomarkers or molecular markers.
Benign tumors often have a visual border of a protective sac that helps doctors diagnose them as benign. Your doctor may also order blood tests to check for the presence of cancer markers. In other cases, doctors will take a biopsy of the tumor to determine whether it's benign or malignant.
They can feel firm or soft. Benign masses are more likely to be painful to the touch, such as with an abscess. Benign tumors also tend to grow more slowly, and many are smaller than 5 cm (2 inches) at their longest point. Sarcomas (cancerous growths) more often are painless.
Benign tumors may be painless, but often they cause bone pain. The pain can be severe. Pain may occur when at rest or at night and tends to progressively worsen. (See also Overview of Bone Tumors.
A CA-125 test measures the amount of the cancer antigen 125 (CA-125) in a person's blood. CA-125 is a protein that is a biomarker or tumor marker.
There are 3 ways your doctor can test for tumor markers: a blood test, a urine test, or a biopsy. A member of your health care team will send a sample of your blood or urine into a laboratory for analysis.
Cancers that affect the blood and bone marrow can also lower the count. These types of cancers include leukemia, lymphoma, and multiple myeloma. Amounts of different white blood cells. Higher-than-normal numbers of lymphocytes or monocytes can indicate the possibility of certain types of cancers.
Blood Tests
A low level of red blood cells, white blood cells or platelets may indicate that the lymphoma is present in the bone marrow and/or blood.
Levels tend to increase when a cancer is progressing or has metastasized, but there are many other noncancerous conditions that can cause elevations as well, such as anemia, kidney disease, and many infections.
There is no way to tell from symptoms alone if a tumor is benign or malignant. Often an MRI scan can reveal the tumor type, but in many cases, a biopsy is required.
A tumor marker is anything present in or produced by cancer cells or other cells of the body in response to cancer or certain benign (noncancerous) conditions that provides information about a cancer, such as how aggressive it is, what kind of treatment it may respond to, or whether it is responding to treatment.
Tumor marker tests are not perfect. They are often not specific for cancer and may not be sensitive enough to pick up a cancer recurrence. The presence of tumor markers alone is not enough to diagnose cancer. You will probably need other tests to learn more about a possible cancer or recurrence.
A benign tumor is not a malignant tumor, which is cancer. It does not invade nearby tissue or spread to other parts of the body the way cancer can. In most cases, the outlook with benign tumors is very good. But benign tumors can be serious if they press on vital structures such as blood vessels or nerves.
Non-cancerous brain tumours tend to stay in one place and don't spread. They won't usually come back if all of the tumour can be safely removed during surgery. Because they aren't cancerous they can often be successfully treated, but they're still serious and can be life threatening.
“Most benign tumors aren't life-threatening. They can be left alone as they are unlikely to cause damage to any other areas of your body. In fact, many individuals carry benign tumors that don't require treatment, such as moles, throughout their lives.”
Lipomas: Lipomas are formed by fat cells. They are the most common type of benign tumor. Meningiomas: These tumors develop in the brain and spinal cord membranes and are most commonly benign. Nevi: These noncancerous growths are more typically known as moles and appear on the skin.
Stress induces signals that cause cells to develop into tumors, Yale researchers have discovered.
Benign tumors of soft tissue are more common than benign tumors of bone. They can occur at almost any site, both within and between muscles, ligaments, nerves, and blood vessels.
Tumour markers are not recommended for screening asymptomatic patients for malignancy because they generally: Lack specificity – many patients may have an elevated result due to benign disease. Lack sensitivity – many patients with malignancy will have a normal result.
Benign tumors are those that stay in their primary location without invading other sites of the body. They do not spread to local structures or to distant parts of the body. Benign tumors tend to grow slowly and have distinct borders. Benign tumors are not usually problematic.