Cone Biopsy and Pregnancy: What Should You Know Before Trying to Conceive?

A cone biopsy, also called a conisation, removes a cone-shaped piece of abnormal tissue from the cervix. It may be used to diagnose or treat high-grade cervical cell changes. Many women can conceive after the procedure. However, the amount of cervical tissue removed can influence pregnancy risks.

Pregatips
A cone biopsy is a procedure in which a cone-shaped section of abnormal tissue is removed from the cervix. It may be recommended when cervical cell changes need further assessment or treatment. It is commonly performed to diagnose or treat high-grade cervical cell changes, often related to HPV. The procedure can preserve the possibility of future pregnancy. However, the depth and amount of cervical tissue removed can matter when planning a pregnancy. We spoke to Dr Bhavya Rathore, Senior Consultant – Obstetrician and Gynaecologist at Cloudnine Group of Hospitals, Indirapuram, about cone biopsy and pregnancy.
She explains that women who have undergone a cone biopsy can often conceive and have healthy pregnancies. However, they may need appropriate follow-up before and during pregnancy, depending on their individual history.

Can You Get Pregnant After a Cone Biopsy?

Having a cone biopsy does not automatically mean that you cannot become pregnant. Many women conceive after the procedure. However, your previous treatment should be discussed with your gynaecologist when you are planning a pregnancy.

Dr Bhavya explains that the extent of cervical tissue removed during the procedure can be important. A larger or deeper excision may be associated with a greater risk of pregnancy complications, particularly preterm birth.

This does not mean that you will necessarily have a premature delivery. Your individual risk depends on several factors, including your previous cervical treatment and pregnancy history.

How Can a Cone Biopsy Affect Pregnancy?

One important concern after cervical excision is an increased risk of preterm birth. Research has found that this risk can increase with the depth of cervical tissue removed.

The cervix may also become shorter or weaker after a significant amount of tissue has been removed.

Dr Bhavya says that women who have had a significant amount of cervical tissue removed may require closer assessment during pregnancy. Your doctor can consider the details of your previous procedure along with other factors that may influence your risk of preterm birth.

The risk is therefore not the same for every woman who has undergone a cone biopsy.


What Should You Do Before Trying to Conceive?

A pre-pregnancy consultation can help you understand your individual situation.

Dr Bhavya recommends discussing your pregnancy plans with your gynaecologist before trying to conceive. Your doctor may review:

  • Your biopsy and pathology reports
  • Previous Pap test results
  • HPV test results
  • Recommended cervical surveillance
  • The amount of cervical tissue removed
  • Your previous pregnancy history
This review can help determine whether any further follow-up is needed before pregnancy.

It can also give your obstetrician useful information for planning care once you become pregnant.

Will You Need Extra Monitoring During Pregnancy?

Not every woman with a previous cone biopsy will need the same level of monitoring. However, your obstetrician may recommend cervical-length assessment using ultrasound, particularly if a significant amount of cervical tissue was removed or you have other risk factors for preterm birth.

Dr Bhavya explains that monitoring can help your healthcare team assess the cervix during pregnancy and plan care according to your individual risk.

The need for additional surveillance should therefore be decided by your obstetrician rather than assumed solely because you have had a cone biopsy.

Can You Have a Vaginal Birth After a Cone Biopsy?

A previous cone biopsy does not automatically mean that you will need a caesarean birth.

Dr Bhavya says that women who have undergone the procedure can still have a vaginal delivery. The mode of birth depends on your individual pregnancy, obstetric circumstances and current cervical health.

Your previous cone biopsy is therefore only one part of the overall pregnancy and delivery plan.

If you are planning to conceive after the procedure, discussing your pregnancy plans early can help your gynaecologist and obstetrician decide what follow-up may be appropriate.

A cone biopsy does not automatically prevent pregnancy or vaginal birth. However, knowing the details of your previous procedure can help your healthcare team plan appropriate care.

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FAQs on Cone Biopsy and Pregnancy: What Should You Know Before Trying to Conceive?

  1. Can I have a healthy pregnancy after a cone biopsy?
    Yes. Many women can conceive and have healthy pregnancies after a cone biopsy. However, your individual pregnancy risks can depend on the amount and depth of cervical tissue removed.
  2. Does a cone biopsy increase the risk of preterm birth?
    Yes. Previous cervical excision is associated with an increased risk of preterm birth, particularly when a larger or deeper amount of tissue has been removed.
  3. Can I have a vaginal delivery after a cone biopsy?
    Yes. A previous cone biopsy does not automatically rule out vaginal birth. Your mode of delivery will depend on your pregnancy, obstetric circumstances and current cervical health.
Medically Reviewed By:
Dr Bhavya Rathore, Senior Consultant – Obstetrician and Gynaecologist at Cloudnine Group of Hospitals, Indirapuram