Tubal Ring Sign

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added:
5 months ago
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1483
specialty:
Gynecology

Case description

Tubal ring sign also referred to as bagel sign or blob sign, is one of the ultrasound signs of a tubal ectopic. It comprises an echogenic ring that surrounds an unruptured ectopic pregnancy. It is said to have a 95% positive predictive value (PPV) for ectopic pregnancy.


Differential diagnosisIt can be mimicked by a normal corpus luteum. To differentiate the two, the bimanual examination can be useful to differentiate an ovarian corpus luteum (moves with ovary) from a tubal ectopic (moves separately from the ovary). Normal ovarian tissue may also be noticeable around a corpus luteum.

tags: Tubal Ring Sign bagel sign blob sign tubal ectopic ultrasound ectopic pregnancy ectopic pregnancy diagnosis corpus luteum


Joanna Stachera
Editor

Joanna Stachera

MD

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