Diagnosis
A lot of times they're found by chance. Your doctor may spot them while they're doing an exam to look for other diseases.
If you go to your doctor because you have symptoms of a carcinoid tumor, they may do some of these tests to check if you've got them:
Biopsy. They remove some cells from your body, and a specialist looks at them under a microscope to check for cancer. The tumor may also be tested for certain genes or proteins to help fine-tune your treatment.
Blood and urine tests. Your doctor takes samples of both and tests them for hormones and other substances that carcinoid tumors release, such as serotonin or 5-HIAA.
Upper endoscopy. A thin, flexible tube called an endoscope can help your doctor see tumors in the esophagus, stomach, and small intestine. They put it through your mouth to get a view of your GI tract. You'll get medicine that keeps you from feeling pain or discomfort while they do this.
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Colonoscopy. Your doctor inserts a thin, lighted tube through your behind to get a view of your rectum and colon. They may remove pieces of tissue to check for cancer under a microscope. Just like with an endoscopy, you'll get medicine to keep you pain-free.
Capsule endoscopy. For this test, you swallow a pill that has a tiny camera in it. This lets your doctor see all of the small intestine, where many carcinoid tumors begin.
CT, or computed tomography. This powerful X-ray makes detailed pictures inside your body. It can measure the size of your tumor. It can also see whether it has spread to your liver or lymph nodes, which are small glands that are part of your immune system, your body's defense against germs. You may get a special dye to drink, or take it in through a vein, to help show a clearer picture of the tumor.
MRI, or magnetic resonance imaging. It uses powerful magnets and radio waves to make pictures of organs and structures inside your body. An MRI can measure the size of the tumor. Just like with the CT scan, you may need to get a special dye to create a clearer image.
X-ray. It uses radiation in low doses to let your doctor view structures inside your body. It can look for a tumor in your lungs. Before this test, you may need to swallow a liquid containing a chemical called barium that makes the tumor easier for your doctor to see.
Radionuclide scanning. Before this test, you'll take in a small amount of a radioactive substance through one of your veins. This substance is attracted to carcinoid tumors. The test can show where in your body the tumor has spread.
Many people with carcinoid syndrome develop heart complications. Your doctor may suggest you see a heart doctor, called a cardiologist, or get heart study every 2-3 years to monitor your heart.