Abdominal Distension: Ovarian Cyst or Pregnancy Complications? - Internal Medicine

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Abnormal enlargement of the lower abdomen?


Six months ago, I discovered a six-centimeter cyst on my ovary.
I have consulted various hospitals, some suggested surgery while others recommended monitoring.
However, two weeks ago, I found out that I am pregnant.
An ultrasound showed no signs of a gestational sac, and my abdomen is abnormally swollen and sometimes painful.
I am unsure whether the pain is due to the fetus or the cyst.
I am very confused about which specialist to see, as my abdomen continues to swell significantly (my bowel movements are still relatively normal).
I have also had sexual intercourse during this time without noticing any abnormalities.
I have seen many gynecologists, but none have provided a clear answer, which is causing great concern for me and my family.

Xiao You, 20~29 year old female. Ask Date: 2000/11/27

Dr. Zeng Fenyu reply Internal Medicine


It is advisable to consult a gynecologist and also seek the opinion of a gastroenterologist to determine if there are any gastrointestinal diseases.

Reply Date: 2000/11/27

More Info


Understanding abdominal distension, especially in the context of ovarian cysts and pregnancy complications, can be quite complex and concerning. Based on your description, you have a six-centimeter ovarian cyst, and you recently discovered that you are pregnant, but an ultrasound did not reveal a gestational sac. This situation raises several important considerations.

First, it is crucial to understand the nature of the ovarian cyst. Ovarian cysts are fluid-filled sacs that can develop on the ovaries and are quite common, especially in women of reproductive age. Most cysts are benign and resolve on their own, but larger cysts, like the one you have, can sometimes cause discomfort or pain, particularly if they rupture or if there is torsion (twisting) of the ovary. The pain you are experiencing could be related to the cyst itself, especially if it has changed in size or characteristics since your last evaluation.

On the other hand, the absence of a visible gestational sac on ultrasound, despite a positive pregnancy test, raises the possibility of a few scenarios. One concern is an ectopic pregnancy, where the fertilized egg implants outside the uterus, often in a fallopian tube. Ectopic pregnancies can cause abdominal pain and may lead to serious complications if not diagnosed and treated promptly. Another possibility is a very early intrauterine pregnancy that is not yet visible on ultrasound, which can happen if the pregnancy is in its early stages.

Given your symptoms of abdominal distension and pain, along with the uncertainty regarding your pregnancy status, it is essential to seek immediate medical attention. You should consider visiting an obstetrician-gynecologist (OB-GYN) who specializes in high-risk pregnancies or a reproductive endocrinologist. They can perform a thorough evaluation, including repeat ultrasounds and possibly blood tests to measure your hCG levels (the hormone produced during pregnancy). Monitoring these levels can help determine whether the pregnancy is progressing normally or if there are complications.

In addition to the gynecological evaluation, if your abdominal distension is severe or accompanied by significant pain, it may also be worthwhile to consult a gastroenterologist. They can assess whether there are any gastrointestinal issues contributing to your symptoms, especially since you mentioned that your bowel movements are normal.

In summary, your situation requires careful and prompt evaluation by a healthcare professional who can address both the potential complications of your ovarian cyst and the uncertainties surrounding your pregnancy. It is essential to communicate all your symptoms clearly and to advocate for the necessary tests to ensure your health and well-being. Remember, early intervention can be crucial in managing both ovarian cysts and pregnancy-related complications effectively.

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