[Embryonal sarcoma of the lung in a child].

A case of embryonal sarcoma of the lung in a 3-year-old boy is reported. The tumour consisted exclusively of immature mesenchymal structures. Lipoblastic, rhabdomyoblastic, and fibroblastic components can be demonstrated. Epithelial tumour structure are absent. The differential diagnosis to the pulmoblastoma is discussed. The child died after 11 months despite of intensive surgical, radiological, and cytostatic therapy by an extensive local tumour recurrence and metastases within the other lung and the choroid plexus of the brain.