A–Z Glossary

Size discordance

Size discordance is a significant difference in estimated size or weight between twins, particularly when the second twin is larger.

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Natural birth with large baby twins or risks

Natural birth with large baby twins or risks

What does “large baby twins” mean clinically? In everyday language, “large baby twins” may mean babies who feel bigger than expected, measure ahead on ultrasound, or are estimated to be near singleton birthweights despite being twins. Clinically, fetal macrosomia is commonly defined as an estimated fetal weight above 4,000 grams, or 8 pounds 13 ounces. […]