Urethral catheter

Flexible tube inserted through the urethra to the bladder, to allow urine to flow away.

Semen

Fluid released during ejaculation.

Sphincter

Ring of muscle around a natural orifice, allowing the orifice to open and close.

  • The urinary sphincter, located at the prostate outlet, controls the retention and release of urine.
  • The anal sphincter controls the retention and release of stools.

Digital rectal examination

Examination in which the physician inserts a finger into the patient’s rectum in order to feel the prostate.

Tumor

Mass of abnormal cells. A tumor may be either benign or malignant (cancer).

Ultrasound

Painless medical imaging examination performed using an ultrasound scanner.

Urethra

Tube leading from the bladder through which urine leaves the body. The urethra also carries semen during an ejaculation.