Twins, Conjoined

Synonyms

Conjoined Twin

Conjoined Twins

Siamese Twin

Siamese Twins

Twin, Conjoined

Twin, Siamese

Twins, Siamese

MONOZYGOTIC TWINS who are joined in utero. They may be well developed and share only a superficial connection, often in the frontal, transverse or sagittal body plane, or they may share a partial duplication of a body structure. Alternatively, there may be a small and incompletely developed twin conjoined to a larger, more fully developed twin.