Biopsy

A biopsy is a procedure to remove a piece of tissue or a sample of cells from your body so that it can be analyzed in a laboratory. While imaging tests, such as X-rays, are helpful in detecting masses or areas of abnormality, they alone can't differentiate cancerous cells from noncancerous cells. For the majority of cancers, the only way to make a definitive diagnosis is to perform a biopsy to collect cells for closer examination.