[Sonographic diagnosis of a large placental tumour in late pregnancy - case and consequences for delivery].

The article deals with the sonographic diagnosis of a large chorioangioma in the 34th week of pregnancy. In consequence of the fast growth of the tumour and development of an oligohydramnios a Caesarian section was carried out in the 36th week. The infant suffered with anaemia. We summarize the current literature and discuss the differential diagnosis as well as the consequences for delivery in conclusion of the diagnosis "placental tumour".