[Large multicystic space-occupying liver lesion in a 19-year-old woman].

A 19-year-old woman presented with liver capsule pain and a liver lesion on sonography, which contained microvesicular cystic, necrotic and solid fibrotic formations typical for alveolar echinococcosis (AE). The diagnosis was confirmed by serology and histopathology. This parasitic infection which is endemic in Germany is feared because of its malignant growth. The increasing expansion of E. multilocularis in Europe will lead to a higher incidence of AE with an occurrence of cases outside classical endemic regions.