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Endometrial biopsy is a procedure used to study the lining of the uterus. The uterus is also called the endometrium. The biopsy is usually done in your healthcare provider’s office. During the biopsy, small tissue samples are taken from inside the uterus. These are then sent to a lab for study. If any problems are found, you and your healthcare provider will discuss treatment options. The biopsy usually takes only a few minutes, and you can often go back to your normal routine as soon as the procedure is over.
Endometrial biopsy may help pinpoint the cause of certain problems. These include:
Abnormal Pap test results
Bleeding after menopause
Bleeding associated with hormone therapy
Having certain types of cancer
Heavy or irregular menstrual periods
Trouble getting pregnant (fertility problems)
Damage to the uterine wall (very rare)
Problems with endometrial biopsy are rare, but can include:
Your healthcare provider will ask about your health and any medicines you take, like blood thinners. Before your biopsy, you may have tests to make sure you’re not pregnant or have an infection. You may also be asked to sign a consent form. You should do the following 1 to 2 days before the biopsy:
Avoid using creams or other vaginal medicines.
Ask your healthcare provider if you should take pain medicines shortly before the test.
During the biopsy, you will likely experience the following:
You will be asked to lie on an exam table with your knees bent, just as you do for a Pap test.
You may have a brief pelvic exam. An instrument called a speculum is then inserted into the vagina to hold it open.
An antiseptic solution may be applied to the cervix. The cervix may also be numbed with an anesthetic or dilated to widen the opening.
A small tube is passed through the cervix into the uterus.
It is normal to feel some cramping when the tube is inserted. But tell your healthcare provider if you have severe cramping or are very uncomfortable.
Using mild suction, samples are taken from the uterine lining. You may feel pinching or additional cramping when this is done.
The tube and speculum are then removed and the samples are sent to a lab for study.
After the procedure, you may experience the following:
If you feel lightheaded or dizzy, you can rest on the table until you’re ready to get dressed.
For a few hours, you may feel some mild cramping. This can usually be relieved with over-the-counter pain medicines.
You may have some bleeding for a few days. Use pads instead of tampons.
Don’t douche or use any vaginal medicines unless your healthcare provider says it’s OK.
Ask your healthcare provider when it’s OK to have sex again.
It will take about a week for the biopsy results to come back from the lab. Then you and your healthcare provider can discuss the results. These may show that no treatment is required. Or you may be scheduled for a follow-up appointment and more tests. If your biopsy was done for fertility problems, be sure to record the day when your next period begins.
Call your healthcare provider if you have any of the following:
Fever over 100.4°F (38.0°C)
Foul-smelling or unusual vaginal discharge
Heavy bleeding (soaking more than 1 pad an hour for 2 hours)
Severe cramping or increasing pain
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