Defined as two babies born physically connected to each other, conjoined twins (CT) is a fascinating example of a congenital deformity. The scientific field that studies abnormal development, teratology, has two rival theories about how conjoined twinning occurs: fission theory and fusion theory. An academic literature review was performed, and it was found that fusion theory was more supported through anatomical evidence in multiple case reports.

Please feel free to read my review paper here: linky doodle dandy!