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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Does This CT Scan Report Mean?

Hello, I had a CT scan of the abdomen done and it showed fluid in the cal-de-sac junction. What does that mean? How does fluid form there and where does it come from? I follow up with a transvaginal US and it did not show the fluid but I was positive to have a left ovarian cyst.

Wed, 3 Jun 2015
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Radiologist,  's  Response
Hello thanks for writing in.
The cul-de-sac is a space posterior to the uterus and anterior to the rectum. It is the lowest/deepest part of the abdominal cavity- hence fluid from any cause, first collects here.

Small amount of fluid in the cul-de-sac is commonly seen on imaging, and is usually physiological- usually due to rupture of ovarian follicle/cyst.
Other conditions in the differential are pelvic infection/ tumor/trauma etc.

The TV ultrasound did not show any fluid, so it was probably physiological(got absorbed). The left ovarian cyst can be followed up in 6-8 weeks. Most cysts rupture spontaneously.
If you have any pain or fever, please visit your gynecologist.
Hope this was helpful. Take care.
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What Does This CT Scan Report Mean?

Hello thanks for writing in. The cul-de-sac is a space posterior to the uterus and anterior to the rectum. It is the lowest/deepest part of the abdominal cavity- hence fluid from any cause, first collects here. Small amount of fluid in the cul-de-sac is commonly seen on imaging, and is usually physiological- usually due to rupture of ovarian follicle/cyst. Other conditions in the differential are pelvic infection/ tumor/trauma etc. The TV ultrasound did not show any fluid, so it was probably physiological(got absorbed). The left ovarian cyst can be followed up in 6-8 weeks. Most cysts rupture spontaneously. If you have any pain or fever, please visit your gynecologist. Hope this was helpful. Take care.