[Sonographic diagnosis of a placental tumour with high-grade intrauterine foetal development deficiency, increasing anhydramnia and subsequent foetal death (author's transl)].

The article reports on prenatal diagnosis of a large tumour of the placenta (chorioangioma) and, for the first time, on sonographic observation of the course of the disease with intrauterine deficient development of the foetus, increasing oligohydramnia and subsequent intrauterine foetal death. The complications associated with large chorioangiomas, which are well known, with an intrauterine and perinatal mortality of up to 30%, underline the need for timely sonographic diagnosis. Chances of sufficiently early intervention have been created via closely meshed checkup controls.