Neutropenic fever. HIV infection.. There is susceptibility artifact in the region of the ears which causes mild limitation, most pronounced on diffusion-weighted imaging and fat saturated postcontrast axial imaging.There is a punctate T2-hyperintense right frontal white-matter lesion (series #401, image #19), which shows no diffusion restriction or contrast enhancement. This is nonspecific. Otherwise, the brain shows normal signal characteristics. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is no abnormal intracranial enhancement. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The dural venous sinuses are patent. Major intracranial arterial flow voids are preserved.There is mild polypoid thickening (versus small retention cysts) in the left maxillary sinus. The other paranasal sinuses and the mastoid air cells are clear. The pituitary gland is slightly smaller than expected for age which is nonspecific.
1.Right frontal punctate T2-hyperintensity is nonspecific. The rest of the brain examination is normal.2.Left maxillary sinus mucosal thickening (versus retention cysts) is mild and nonspecific.