P30.14: Prenatal diagnosis of right lower extremity congenital fibrosarcoma

Parapagus (laterally fused) diprosopus (two faces) dibrachius (two upper extremities) dipus (two lower extremities) conjoined twins are extremely rare and the coexistence of anencephaly with contiguous spinal defect (craniorachischisis totalis) makes it more extreme. In this report we present such a case diagnosed finally by the aid of 3D ultrasonography (US) at the 12th week of the gestation of a gravida 2, para 1, 22 year old woman. 2D abdominal and vaginal US were inefficient for the diagnosis (Figure 1). The family decided to terminate the pregnancy. Postabortal anatomic fine dissection is still going on at the time of this writing. Macroscopic evaluation confirmed the US diagnosis. The heart, diaphram, liver and the perineum were observed as all united. Fine dissection of the heart showed 4 vessels arising from the ventricles and there was a membraneous type ventricular septal defect.