An abnormal structure, or one that is abnormal in size or location, present at birth or evolving over time as a result of a defect in embryogenesis.
(Slot-Cardinality Congenital-Abnormality Morphological-Property 1) (=> (Congenital-Abnormality ?Self) (Exists (?A) (And (Antedates ?Self ?A) (Birth ?A))))