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Needle Biopsy of the Prostate
This test involves placing a specialized probe into the rectum in order to obtain an ultrasound study of the prostate. This study is primarily useful for two things: (a) obtaining an estimate of the size of the prostate, and (2) insuring that the biopsy needle actually penetrates a representative sample of the prostate when biopsying the gland. Ordinarily, an ultrasound study without a biopsy is not very helpful in the diagnosis of prostate cancer.
The study may be indicated in those who have an abnormal PSA level, an abnormal digital examination of the prostate, or when attempting to obtain a size estimate of the prostate in anticipation of surgery.
Normally, the patient would prepare for the TRUS and needle biopsy of the prostate by stopping all blood thinners for at least a week before the study and self-administering a Fleet enema about an hour or two prior. Patients with certain heart conditions or who have prostheses may be given antibiotics before the procedure. Other patients will be given their antibiotics immediately after the biopsy.
The procedure takes about 15 minutes and is usually
not very uncomfortable. Patients can resume their daily activities
immediately after the study. Following the procedure, you may notice a
little blood in the urine, semen, and in the stool for a few days and
rarely for several weeks.