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Scrotal ultrasound

Testicular ultrasound; Testicular sonogram

Scrotal ultrasound is an imaging test that looks at the scrotum. The scrotum is the flesh-covered sac that hangs between the legs at the base of the penis and contains the testicles.

The testicles are the male reproductive organs that produce sperm and the hormone testosterone. They are located in the scrotum, along with other small organs, blood vessels, and a small tube called the vas deferens.

How the Test is Performed

You lie on your back with your legs spread. The health care provider drapes a cloth across your thighs under the scrotum or applies wide strips of adhesive tape to the area. The scrotal sac will be slightly raised with the testicles lying side by side.

A clear gel is applied to the scrotal sac to help transmit the sound waves. A handheld probe (the ultrasound transducer) is then moved over the scrotum by the technologist. The ultrasound machine sends out high-frequency sound waves. These waves reflect off areas in the scrotum to create a picture.

How to Prepare for the Test

No special preparation is needed for this test.

How the Test will Feel

There is little discomfort. The conducting gel may feel slightly cold and wet.

Why the Test is Performed

A testicle ultrasound is done to:

  • Help determine why one or both testicles have become larger
  • Look at a mass or lump in one or both of the testicles
  • Find the reason for pain in the testicles
  • Show how blood flows through the testicles

Normal Results

The testicles and other areas in the scrotum appear normal.

What Abnormal Results Mean

Possible causes of abnormal results include:

Risks

There are no known risks. You will not be exposed to radiation with this test.

Considerations

In certain cases, Doppler ultrasound may help identify blood flow inside the scrotum. This method can be helpful in cases of testicular torsion because blood flow to the twisted testicle may be reduced.

References

Gilbert BR, Fulgham PF. Urinary tract imaging: basic principles of urologic ultrasonography. In: Partin AW, Dmochowski RR, Kavoussi LR, Peters CA, eds. Campbell-Walsh-Wein Urology. 12th ed. Philadelphia, PA: Elsevier; 2021:chap 4.

Owen CA. Scrotum. In: Hagen-Ansert SL, ed. Textbook of Diagnostic Sonography. 8th ed. St Louis, MO: Elsevier; 2018:chap 23.

Sommers D, Winter T. The scrotum. In: Rumack CM, Levine D, eds. Diagnostic Ultrasound. 5th ed. Philadelphia, PA: Elsevier; 2018:chap 22.

    • Male reproductive anatomy

      Male reproductive anatomy - illustration

      The male reproductive structures include the penis, the scrotum, the testicles (testes), the epididymis, the seminal vesicles, and the prostate.

      Male reproductive anatomy

      illustration

    • Testicular ultrasound

      Testicular ultrasound - illustration

      Testicular ultrasound is an imaging procedure to examine the testicles and other scrotal structures. A ultrasound is performed by moving the ultrasound transducer over the scrotum. Ultrasound pictures are viewed on a monitor at the same time. Testicular ultrasound is performed to help determine the cause of testicular enlargement or the reason for testicular pain.

      Testicular ultrasound

      illustration

      • Male reproductive anatomy

        Male reproductive anatomy - illustration

        The male reproductive structures include the penis, the scrotum, the testicles (testes), the epididymis, the seminal vesicles, and the prostate.

        Male reproductive anatomy

        illustration

      • Testicular ultrasound

        Testicular ultrasound - illustration

        Testicular ultrasound is an imaging procedure to examine the testicles and other scrotal structures. A ultrasound is performed by moving the ultrasound transducer over the scrotum. Ultrasound pictures are viewed on a monitor at the same time. Testicular ultrasound is performed to help determine the cause of testicular enlargement or the reason for testicular pain.

        Testicular ultrasound

        illustration

      Tests for Scrotal ultrasound

       

      Review Date: 4/2/2022

      Reviewed By: Jason Levy, MD, FSIR, Northside Radiology Associates, Atlanta, GA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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