Unequal conjoined twins in which the smaller parasite is joined to the larger autosite at the top of the head. See: conjoined twins.
[epi- + G. komē, hair of the head]
epicomus(ē-pĭk′ō-mŭs) [″ + kome, hair]
A congenital malformation in which the head of a parasitic twin is attached to the summit or vertex of the skull of the larger twin.