Presentation
Pneumocephalus after surgery of evacuation of subdural fluid collections.
Patient Data
Age: 80 years
Gender: Male
From the case:
Pneumocephalus
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_pin":false},"extraPropsURL":"/studies/51025/annotated_viewer_json?lang=us"}
Axial CT shows compression and separation of the frontal lobes secondary to the presence of gas within the interhemispheric space. Lung windows shows the double-peaked silhouette of the Mount Fuji sign. There are subdural fluid collections.
Case Discussion
Pneumocephalus is a common finding after surgery. Air accumulation can produces a mass effect on adjacent brain. The air pressure exceeds the surface tension of cerebrospinal fluid between the frontal lobes giving the appearance of Mount Fuji.