It is a classed as a pseudocyst, since there is no epithelial lining or fluid content. This<unk>  is usually considered with other cysts of the jaws, since it can be mistaken for such on a radiograph.
Stafne defect
Keyhole defect
Double aortic arch
Situs ambiguus
First arch syndrome
Pulmonary hypoplasia
Pulmonary agenesis
Pulmonary atresia