Extensive intracranial pneumocephalus with low signal intensity gas is seen involving the subarachnoid CSF spaces, basal cisterns, and bilateral frontal subdural spaces more at the right side. marked blooming is seen in the T2 GRE.
Bilateral loss of the cribriform plate of ethmoid and anterior paramedian bony cranial fossa with subsequent herniation of the basal frontal gyri into the ethmoid sinuses and superior nasal cavities consistent with naso-ethmoid meningoencephalocele.