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Conjoined Twins FAQ: What Are The Types of Conjoined Twins?

By Pamela Prindle Fierro, About.com

Question: Conjoined Twins FAQ: What Are The Types of Conjoined Twins?
Answer: Conjoined twins are classified according to the place on the body where the twins are connected. Different terms are used to describe the connection.

Upper Trunk & Head (Front/Back): Cephalopagus

Head: Craniopagus

Brain, Head & Chest: Epholothoracopagus

Trunk (Front/Back): Omphalopagus

Rear End: Pygopagus

Chest (Side to Side): Thoracopagus

Lower Body (Side to Side): Parapagus

Lower Body (Front/Back): Ischiopagus

When the twins share an extensive connection over several areas, then the duplicated part is named. For example, dicephalus describes twins with two heads and one body.

Conjoined twins, also known as Siamese twins, are a rare type of monozygotic (identical) twins. Find more answers to Frequently Asked Questions About Conjoined Twins.

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