Primitive intrapericardial teratoma associated with yolk sac tumour

An intrapericardial vacuolated mass compressing and displacing the heart was diagnosed by echocardiography in a foetus of 22 weeks gestation. The birth was induced for early signs of foetal distress at 29 weeks and, after two initial pericardial evacuation procedures, the tumour was resected radically 7 days after birth at a weight of 1.55 kg. Mass histology showed teratoma associated with yolk sac tumour. We comment on the overall approach adopted after foetal diagnosis and the histopathological features of the tumour, and try to draw conclusions on patient outcome data.