[Fetal oncology]

The author presents a review of benign and malignant tumors that may affect the fetus. Virtually all tumors that occur in children and adults may also develop in the fetus, and can be found in the neonate. For their early diagnosis ultrasonography and magnetic resonance imaging are of critical importance. These techniques represent the cutting edge of contemporary diagnostic technology. Regretfully, the progress in perinatal diagnostic methodology has not been matched, as yet, by comparable therapeutic options. These are still in their experimental stages. Only a few centers perform surgical interventions. Options vary about the risk-benefit ratios of the respective operative procedures.