A 24-year-old woman presents at 7 weeks with lower abdominal pain and spotting. Transvaginal ultrasound shows an empty uterus with a central fluid collection surrounded by a single decidual layer. No adnexal mass is seen. What is this specific ultrasound finding called?
- A Double decidual sac sign
- B Bagel sign
- C Pseudosac ✓
- D Corpus luteum cyst
Correct answer: C. Pseudosac
Explanation
A pseudosac is a central intrauterine fluid collection surrounded by a single decidual layer, commonly seen with ectopic pregnancy. The double decidual sac sign is a true intrauterine gestational sac. The bagel sign is an extrauterine tubal ring. A corpus luteum cyst is an adnexal structure.
Reference: Williams Obstetrics, 26th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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