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Siamese twins - Definition


Twins are two children born during the same delivery. They can be monozygotic, or identical twins in everyday language, when they come from the same egg, or dizygotic, fraternal twins, when two eggs were fertilized. Siamese twins are connected by a body part. The fusion takes place in the first days of embryonic development. They do not separate completely. The connection between the twins may be larger or smaller, and based on any part of the body. Siamese twins can be joined at the head, shoulder, abdomen or by any other part, and sometimes share common organs. When Siamese twins are viable, surgical separation can be attempted by surgery: these operations are complicated and risky.