What does "Double decidual sac sign" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
The "Double decidual sac sign" is a term used in early pregnancy ultrasound scans. It refers to two concentric rings seen around a gestational sac, which is the fluid-filled space that surrounds a developing baby in the womb. This sign is usually visible about 4-5 weeks into pregnancy and is a positive indication that the pregnancy is progressing normally. It helps doctors confirm that the pregnancy is in the right place, that is, inside the uterus and not elsewhere.
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