Your doctor may also suggest these tests to find out if you have Kaposi's sarcoma (KS) and where it is:
Bronchoscopy. If the doctor suspects that the lesion may be KS or if there are suspicious nodules on the X-rays, the doctor may do a bronchoscopy for diagnosis. This test uses a thin, flexible tube called a bronchoscope, which is equipped with a light and a camera lens. The doctor inserts it into your windpipe to look for lesions inside your trachea. Your doctor can take biopsies during this test to send to a pathologist to examine. A pathologist is a doctor trained in looking at cancer cells. If you have a bleeding lesion, the doctor can stop the bleeding during this test.
Computed tomography (CT scan). Your doctor may use this test for lung lesions. A CT scan uses an X-ray beam to take pictures of the inside of your body from many angles. A computer combines these pictures and gives the doctor a detailed cross-section view of the body.
Endoscopy. For lesions in the gastrointestinal tract (GI tract), the doctor will use a thin, flexible tube called an endoscope, which is equipped with a light and a camera lens. This tube lets the doctor see inside your esophagus, stomach, and intestines. The doctor can use the endoscope to take biopsies of lesions in your GI tract. Lesions can also grow in your rectum. Sometimes, a doctor can find these lesions by inserting a gloved finger in your anus. Normally though, these lesions grow under the surface of rectal tissue and have to be found with an endoscope.
X-ray. An X-ray machine takes a picture of the inside of the chest. The doctor may use a chest X-ray to see KS in your lungs.
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