Male, 3 months old, status post fall with parietal skull fractures. The known parietal bone fractures are not discretely visualized on MRI. However, there is a small extracranial hematoma overlying the site of the right parietal fracture. No clear evidence of scalp injury is seen along the course of the known left parietal fracture.Intracranially, two areas of extra-axial blood product are seen in the vicinity of the right parietal fracture which measure no more than 2 to 3 mm in thickness which correlate well with findings on prior CT (see image 11 series 701). Likewise, a 2 mm thick probable epidural collection is seen in the vicinity of the left parietal bone fracture which also correlates well with hemorrhage seen on prior CT (see image 12 series 701). On susceptibility weighted images, there are three foci of dark signal seen at the high right cranial vertex (image 15 series 1101) which may represent additional areas of trace extra-axial blood product.No additional significant intracranial collections are seen. Brain parenchymal morphology is within normal limits. No evidence of edema or mass effect is seen. No restricted diffusion is evident to suggest cytotoxic edema. The ventricular system is normal in size and morphology. The pattern of white matter myelination is appropriate for stated age.
The known bilateral parietal bone fractures are not discretely visualized due to technical differences between MRI and CT. However, in the vicinity of the right parietal bone fracture, there is a small extracranial hematoma and trace extra-axial intracranial blood product which correlates well with prior CT. In the vicinity of the known left parietal bone fracture, there is a thin probable epidural hematoma which also correlates well with findings on CT. Trace presumed extra-axial blood product is also seen at the high right cerebral vertex. The small size of all the above-mentioned hemorrhages precludes accurate dating by MRI.Evaluation of the brain parenchyma is within normal limits. No evidence of contusion or significant parenchymal hemorrhage is detected. No edema or mass effect is seen. Ventricles are normal in size.