CASE 39: 18y/o male patient with head trauma

Patient had head trauma 3 weeks ago but was reffered to us with acute altered mental status. He suffered a Grade I head trauma directly in the forehead with no loss of consciousness but with the course of days he proggresively developed neurological symptoms. At admision he had a GCS of 9. Previous CT scans (not shown) only reported mild brain edema due to effaced gyri. He didn't had history of drug abuse or any disease, only chronic sinusitis.

With a diagnosis in mind, we conduced a CT scan of the base of the skull. (Only relevant images are shown)

Findings?..later the conclusion.