[Moebius' syndrome and Poland's anomaly (author's transl)].

The syndrome of Moebius and Poland's anomaly have some features in common. The malformations of the limbs-especially those of the fingers (brady-, syn-, symbrachydactyly)-are identical in both disorders. Hypoplasia of the m. pectoralis major, characteristic for Poland's anomaly, may accompany Moebius' syndrome and cerebral nerve pareses may be associated with Poland's anomaly, thus distinction between the two disorders may be impossible. Both disorders affect the embryo at the same gestational age and the causative factor is unknown in either of them. Simultaneous evaluation of findings observed in patients suffering of either condition should be performed to elucidate pathogenesis and aetiology.