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What is a sonohysterography?

A sonohysterography is a special type of ultrasound. During this procedure, sterile saline is injected into the uterus through a thin, plastic tube. Next, sound waves are used to create images of the uterus lining. This procedure does not use ionizing radiation, the energy used in X-rays.

Why it's done

Your doctor may suggest a sonohysterography if a normal ultrasound didn’t uncover the cause of an issue, such as unexplained vaginal bleeding or infertility issues. It can reveal:

  • Abnormal growths, such as fibroids or polyps
  • Scar tissue within the uterus
  • Postmenopausal bleeding
  • Congenital defects


There is a rare risk of infection. If you experience any pain or abnormal discharge after the procedure, you should contact your doctor.

How to prepare

This exam does not require special preparation, though your doctor may recommend performing it between days five and nine of your 28-day menstruation cycle, as this helps avoid the risk of infection.

What to expect after treatment

After the exam, you may experience some light cramping, spotting or watery discharge. Most women are able to return to their normal activities after the test. Your doctor will notify you if any follow-up appointments are necessary.

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