Absence of enhancement in a lesion does not preclude primary central nervous system T-cell lymphoma: A case report

Figure 3 Follow up magnetic resonance imaging one month after initial scan. A: T2 weighted image; B: T2 fluid attenuated inversion recovery image shows decreased extent of hyperintense lesion at right basal ganglia, but increased extents of remaining hyperintense lesions; C: T1 weighted image; D: Post-contrast T1 weighted image; E: Post-contrast T1 black blood image shows no enhancement at T2 hyperintense lesions; F: B1000 diffusion weighted image; G: Apparent diffusion coefficient map shows mild diffusion restriction at both basal ganglia; H: Susceptibility weighted image shows newly appeared multifocal hemorrhages at subarachnoid space; I: Arterial spin labeling perfusion magnetic resonance imaging shows increased cerebral blood flow of left basal ganglia lesion.