A core needle biopsy is the main method used to diagnose prostate cancer. It is usually done by a urologist. During the biopsy, the doctor usually looks at the prostate with an imaging test such as transrectal ultrasound (TRUS) or MRI, or a 'fusion' of the two (all discussed below).
How is cancer of the prostate diagnosed?
A biopsy is the main tool for diagnosing prostate cancer, but a doctor can use other tools to help make sure the biopsy is made in the right place. For example, doctors may use transrectal ultrasound or magnetic resonance imaging (MRI) to help guide the biopsy.