Síndrome de perfusión arterial retrógrada en gemelos (trap): feto acardio. Reporte de un caso

we presente the case of a 23 year old patient, from barinas state, ii gravida, with a twin monochorial pregnancy, a normal fetus who died for respiratory distress in neonatal period and the other one, was an acardio anceps. the acardius presented absence of heart and lungs, a rudimentary brain, and anomalies of extremities. the dissection showed epidermis with numerous vacuolized cells, edematous dermis and absence of mayor epiploon. the external female genitals were well developed. radiological screening showed a rudimentary cranium and anomalies of the hands and feet. we reviewed the last 30 years of acardia literature.