A prostate ultrasound — also called a transrectal ultrasound (TRUS) — is a medical imaging test used to examine the prostate gland, which is a small gland in men located just below the bladder and in front of the rectum.

Here’s what it involves:

🧠 Purpose

Doctors order a prostate ultrasound to:

• Check the size and shape of the prostate

• Investigate urinary or sexual symptoms

• Evaluate elevated PSA (prostate-specific antigen) levels

• Look for abnormalities like enlargement, infection, or tumors

• Help guide a biopsy (tissue sample) if prostate cancer is suspected

⚙️ How it’s done

1. The patient lies on their side with knees slightly bent.

2. A small, lubricated probe (transducer) — about the size of a finger — is gently inserted into the rectum.

3. The probe emits sound waves that create real-time images of the prostate on a monitor.

4. The test usually takes 10–20 minutes.

🩺 What it shows

The ultrasound can show:

• Prostate size and volume

• Cysts, calcifications, or nodules

• Tumor-like areas (which may need biopsy)

• Signs of prostatitis (inflammation or infection)

💡 Preparation

• Often, you’ll be asked to use an enema beforehand to clear the rectum.

• You may also be told to drink water before the test if a bladder scan is also planned.

⚖️ Risks and comfort

• It’s generally safe and painless, though you might feel mild discomfort or pressure.

• No radiation is used.

• If a biopsy is done, there may be slight bleeding or soreness afterward.

Would you like me to explain what the images show or what to expect during a prostate biopsy if one is performed during the ultrasound?