胸腹联体双胎（A型）。

Sultan Omar Muayad, Tawfeek Ahmed Said

BJR Case Rep. 2015 Oct 22;2(1):20150016. doi: 10.1259/bjrcr.20150016. eCollection 2016.

A case of conjoined twins discovered by routine transabdominal ultrasound examination at 16 weeks gestation in a 19-year-old multigravid female. They were joined at the chest and the abdomen and had one functional heart. The pregnancy was terminated by caesarean section at 19 weeks gestation with approval from the family.

一名19岁多胎妊娠女性在孕16周时通过常规经腹超声检查发现联体双胎。她们胸部和腹部相连，共用一个功能性心脏。经家属同意，在孕19周时行剖宫产终止妊娠。