Most common site of morgagni hernia is-
Sites of Congenital Hernia
-        Posterolateral costo vertebral hernia - (Foramen of Bochdalek) - Most common. More common on left side.
-        Retrosternal - (Foramen of Morgagni) - More common on right side
-        Posterior hernia - Failure of posterior part development of diaphragm.
-        Central hernia - Rupture of fetal membranous diaphragm - Rare. If present, more commonly seen on left side.
-        Through esophageal opening.
Left anterior
Right posterior
Right anterior
Left posterior