Pediatric Subarachnoid Hemorrhage

Etiology: traumatic resulting in blood between arachnoid membrane and pia mater
Imaging: faint collections of hemorrhage in the subarachnoid space, often associated with subdural hematoma and cerebral contusion
Complications: vasospasm and stroke

Radiology Cases of Subarachnoid Hemorrhage

CT of cerebral edema and subarachnoid hemorrhage — Axial CT without contrast of the brain shows diffuse low density through the bilateral cerebral hemispheres (anteriorly) with a normal density cerebellum (posteriorly) that appears relatively hyperdense when compared to the cerebral density. Subarachnoid hemorrhage was also seen bilaterally in the basal cisterns.