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Transrectal ultrasound with and without biopsy

General instructions for Transrectal ultrasound with and without biopsy

Test that uses a probe in the rectum to examine the prostate and, optionally, extract tissue.

  • Definition: A test that uses a probe in the rectum to examine the prostate and, optionally, extract tissue.
  • Fasting: Generally, strict fasting is not required for either the ultrasound or the biopsy. You can have a light meal before the appointment and drink water normally. Only if your doctor indicates that the biopsy will be performed under deep sedation should you complete a total fast from solids and liquids for 6 to 8 hours.
  • Medication: If the procedure is without biopsy, maintain your usual medication. If it's with biopsy, it is strictly necessary to inform your doctor if you take anticoagulants or antiplatelet agents (such as Aspirin, Sintrom, etc.), as they could increase the risk of bleeding and you will likely need to stop them a few days before, always under strict medical supervision.
  • Clothing and Accessories: Use comfortable, loose, and easy-to-remove clothing. Upon arrival, you will be asked to undress from the waist down and will be provided with a clinical gown. It is not necessary to remove watches, rings, or piercings for this procedure.
  • Specific Requirements: In both cases, it is necessary to apply a cleansing enema at home between 2 and 3 hours before the test to empty the rectum and ensure a clear image. If you have a biopsy scheduled, it is an essential requirement to take a preventive antibiotic prescribed by your doctor in the hours before (and sometimes after) to avoid infections. In the case of a biopsy, it is also recommended to be accompanied.
  • Expected discomfort or pain from the test: During the ultrasound, you will feel a sensation of pressure or the urge to go to the bathroom as the lubricated probe is inserted, which can be somewhat uncomfortable but not painful. In case of a biopsy, you might feel quick and brief pricks or pinches when the samples are taken. It is completely normal and expected to see small traces of blood in the urine, stool, or semen for several days or weeks after a biopsy.