Clefts are often associated with other more serious congenital defects. 裂口常与其他更严重的先天性异常并发。
Orbital meningocele is a rare congenital anomaly with cystic herniation of meninges caused by a bony defect of the cranio-orbital bone. 摘要眼窝脑膜膨出是种罕见的先天性异常，其成因为头颅或眼窝骨的缺损使得脑脑从缺损处呈囊状的膨出。
