Clinical Manifestations of Primary CNS T-Cell Lymphoma

Although PCNSTL is exceptionally rare, we identified distinct neuroimaging patterns showing highly aggressive features on MRI but hypometabolic PET imaging, which may assist in identifying future PCNSTL cases. Despite the limited cohort size, our findings suggest that MTX-based chemotherapy with ASCT may translate into favorable outcome. We report on an ALK1-positive PCNSTL case with sustained complete remission after targeted therapy with lorlatinib.