| http://www.w3.org/ns/prov#value | - A computed tomography scan (CT or CAT scan) -- an x-ray procedure that produces cross-sectional images of the body -- may be used to guide a needle into a tumor in an internal organ such as the lung or liver.Punch biopsyPunch biopsies involve taking a deep sample of skin with a biopsy instrument that removes a short cylinder, or apple core, of tissue.
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