In medicine, anomaly (from the Greek anomalos 'irregular') refers to deviations from the norm and irregularities. The distinction to the terms malformation and variety is not handled uniformly in the medical literature. Usually, only minor malformations are referred to as anomalies and varieties only if they cause clinical symptoms. Anomalies are mostly congenital ( congenital anomaly ) and arise from genetic defects , from disturbances in organogenesis , destruction or changes in organs during fetal development or from toxicological or mechanical effects on the unborn child. Minor abnormalities occur in approximately 15% of newborns. In pathogenetics , the term also stands for structural or numerical changes in the chromosomes (→ chromosome abnormality ).
- ↑ Peter Reuter: Springer Lexicon Medicine. Springer, Berlin a. a. 2004, ISBN 3-540-20412-1 , p. 114.
- ^ Karl Zilles, Bernhard Tillmann : Anatomie . Springer, 2010, ISBN 978-3-540-69481-6 , p. 2.
- ↑ Thomas W. Sadler, Jan Langman: Medical embryology: normal human development and its malformations. 10th edition. Georg Thieme Verlag, 2003, ISBN 3-13-446610-4 , pp. 126–127.