heteropagus

heteropagus

 [het″er-op´ah-gus] conjoined twins consisting of unequally developed components.

het·er·op·a·gus

(het'ĕr-op'ă-gŭs), Unequal conjoined twins in which the imperfectly developed parasite is attached to the ventral portion of the autosite. See: conjoined twins.
See also: epigastrius. [hetero- + G. pagos, fixed]