This article provides some additions and corrections on a recently published case report concerning a pair of di-symmetrical cephalopagus conjoined twins. Eight different types of conjoined twins can be distinguished; one is cephalopagus, which is fourth in rarity of occurrence. Between 17 and 24% of cephalopagus is of the male sex. More than 30 case reports of di-symmetrical cephalopagus can be traced in Western literature, the oldest one described and illustrated in 1569.

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Reproductive Toxicology
Erasmus MC: University Medical Center Rotterdam

Kompanje, E. (2009). Di-symmetric cephalopagus conjoined twins described by Hovorakova et al.: Some additions and corrections. Reproductive Toxicology, 27(2), 203–205. doi:10.1016/j.reprotox.2009.01.009