Hypotonia. Evaluate for brain abnormality. There is T1 hyperintense subdural hemorrhage in the posterior fossa bilaterally without mass-effect on the underlying brain. There is a small focus of susceptibility in the right cerebellar hemisphere associated with apparent decreased right cerebellar sulcal delineation on axial T2-weighted images, although appearing more symmetric on coronal T2-weighted images. Another small focus of susceptibility effect is present superficially in the anterior left temporal lobe. An apparent focus of susceptibility in the body of the left caudate nucleus is probably artifactual. Otherwise, there is no acute infarct. Myelination is very mildly delayed for adjusted gestational age. There is no significant mass-effect or midline shift. The ventricles are normal in size. There is asymmetric expansion of the extra-axial space in the anterior aspect of the left middle cranial fossa with probable mass-effect on the underlying parenchyma, which may represent a small arachnoid cyst.
1.Posterior fossa trace subdural hemorrhage without significant mass-effect might be birth-related.2.Small foci of parenchymal hemorrhage in the right cerebellar hemisphere and left temporal lobe.3.No acute infarct or significant mass-effect.4.Suggestion of a small arachnoid cyst in the left middle cranial fossa.5.Myelination may be very minimally delayed for adjusted gestational age.