and classified this as thoracopagus according to the site of
attachment only [8,9]. Other authors have classified cases of
asymmetric doubling as epigastric heteropagus when the parasite
was connected at the chest wall because of giant omphalocele
[10,11]. A standardized terminology for conjoined twins was
advocated by Spencer et al. [12], however the criteria for thoracopagus
parasiticus in recondite cases are obscure since they
include only the site of union and heart involvement. In the latter
case the autosite was diagnosed with major congenital heart
anomalies and the irrigation of the parasite was sustained by the