Objective. Conjoined twin is a rarely seen congenital anomaly together with 
severe mortality and morbidity. The more common types of conjoined twins include 
the thoracopagus type, where the fusion is anterior, at the chest, and involves 
the heart. We are reporting one case of conjoined thoracopagus twins diagnosed 
by ultrasonography at 11 weeks. Case Report. In a multigravid pregnant woman who 
has been admitted to our clinic with a diagnosis of conjoined twins, 
thoracopagus, by ultrasonography at an 11-week gestation, termination of the 
pregnancy was performed. Conclusion. Making an early diagnosis with 
ultrasonographic examination gives the parents a chance to elect pregnancy 
termination.