![Yolk sac number does not predict reliably amnionicity in monochorionic twin pregnancies: a case of a monochorionic monoamniotic twin pregnancy with two distinct yolk sacs on early first‐trimester ultrasound - Corbett - Yolk sac number does not predict reliably amnionicity in monochorionic twin pregnancies: a case of a monochorionic monoamniotic twin pregnancy with two distinct yolk sacs on early first‐trimester ultrasound - Corbett -](https://obgyn.onlinelibrary.wiley.com/cms/asset/2e6d98fe-40c9-4e06-a606-9571cc8e6476/mfig002.jpg)
Yolk sac number does not predict reliably amnionicity in monochorionic twin pregnancies: a case of a monochorionic monoamniotic twin pregnancy with two distinct yolk sacs on early first‐trimester ultrasound - Corbett -
![Understanding how 4 abnormal ultrasound findings relate to miscarriage risk | Your Pregnancy Matters | UT Southwestern Medical Center Understanding how 4 abnormal ultrasound findings relate to miscarriage risk | Your Pregnancy Matters | UT Southwestern Medical Center](https://s3-us-west-2.amazonaws.com/utsw-patientcare-web-production/original_images/yolk_sacs.png)
Understanding how 4 abnormal ultrasound findings relate to miscarriage risk | Your Pregnancy Matters | UT Southwestern Medical Center
![Monochorionic monoamniotic twin pregnancies with two yolk sacs may not be a rare finding: a report of two cases - Murakoshi - 2010 - Ultrasound in Obstetrics & Gynecology - Wiley Online Library Monochorionic monoamniotic twin pregnancies with two yolk sacs may not be a rare finding: a report of two cases - Murakoshi - 2010 - Ultrasound in Obstetrics & Gynecology - Wiley Online Library](https://obgyn.onlinelibrary.wiley.com/cms/asset/7ad50fe5-e5a1-40eb-85da-02dc156f7ea1/mfig002.jpg)
Monochorionic monoamniotic twin pregnancies with two yolk sacs may not be a rare finding: a report of two cases - Murakoshi - 2010 - Ultrasound in Obstetrics & Gynecology - Wiley Online Library
![Understanding how 4 abnormal ultrasound findings relate to miscarriage risk | Your Pregnancy Matters | UT Southwestern Medical Center Understanding how 4 abnormal ultrasound findings relate to miscarriage risk | Your Pregnancy Matters | UT Southwestern Medical Center](https://s3-us-west-2.amazonaws.com/utsw-patientcare-web-production/original_images/small_crown-rump_length.png)