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))))