noun
craniopagus parasiticus
Medical term for a rare congenital condition where a parasitic twin head is attached to the skull of the other twin.
寄生的頭蓋結合体は非常にまれな先天異常である。
Craniopagus parasiticus is an extremely rare congenital anomaly.
A compound of 寄生的 (parasitic), 頭蓋 (cranium), and 結合体 (conjoined body), directly translating the medical term 'craniopagus parasiticus'.