Early Pregnancy and Ovarian Cysts: What to Know - Obstetrics and Gynecology

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Pregnancy with a cyst?


I had an abdominal ultrasound last Sunday, and the ultrasound showed a gestational sac measuring 0.65 cm.
Is this because I am less than a month pregnant? Additionally, the clinic physician informed me that I have a cyst, which I recall is about 3.5 cm.
Will this cyst grow? Can it be removed during delivery?

sunny, 30~39 year old female. Ask Date: 2016/08/30

Dr. Tian Yiwen reply Obstetrics and Gynecology


The size of the gestational sac observed on ultrasound increases with the progression of pregnancy.
A measurement of 0.65 cm indicates a very early gestational sac size.
During early pregnancy, due to hormonal influences, functional cysts may often develop.
These cysts typically resolve on their own during the course of pregnancy or after delivery.
It is recommended to continue monitoring, as most cases do not require surgical intervention.

Reply Date: 2016/08/30

More Info


Understanding early pregnancy and ovarian cysts is crucial for expectant mothers and those trying to conceive. Your recent ultrasound showing a gestational sac (GS) of 0.65 cm indicates that you are indeed in the early stages of pregnancy, likely less than a month along. At this stage, it is common for the gestational sac to be small, as it is just beginning to develop. Typically, the gestational sac can be seen as early as 4 to 5 weeks of gestation, and its size can vary as the pregnancy progresses.

Regarding the ovarian cyst you mentioned, which is described as a "water cyst" and measures approximately 3.5 cm, it is important to understand that functional ovarian cysts are quite common, especially in women of reproductive age. These cysts often form as part of the menstrual cycle and can vary in size. Most functional cysts are benign and may resolve on their own without any treatment. However, the growth of the cyst can depend on several factors, including hormonal changes during pregnancy.

During pregnancy, the body undergoes significant hormonal changes that can influence the behavior of ovarian cysts. In many cases, functional cysts may persist during early pregnancy but often resolve as the pregnancy progresses. It is essential to monitor the cyst through follow-up ultrasounds, especially if there are any symptoms such as pain or discomfort.

As for your question about whether the cyst can be removed during childbirth, it is generally possible to address ovarian cysts during a cesarean section if necessary. However, the decision to remove a cyst during delivery depends on various factors, including the cyst's size, type, and any associated symptoms. If the cyst is asymptomatic and not causing any complications, your healthcare provider may recommend monitoring it rather than surgical intervention.

It is also essential to communicate openly with your healthcare provider about any concerns you have regarding the cyst and your pregnancy. They can provide personalized advice based on your medical history and the specifics of your case. If the cyst is suspected to be anything other than a functional cyst, further evaluation may be necessary to rule out other conditions, such as endometriosis or other types of ovarian tumors.

In summary, your early pregnancy is indicated by the small gestational sac, and the ovarian cyst is likely a functional cyst that may or may not grow during pregnancy. Regular monitoring and communication with your healthcare provider will be key in managing both your pregnancy and the cyst. If you experience any unusual symptoms, such as severe abdominal pain or changes in your condition, do not hesitate to seek medical attention promptly.

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