Primary leptomeningeal B-cell lymphoma of MALT-type in statu nascendi: A case report and review of the literature

A 29-year-old Caucasian female suffering from bipolar disorder, mixed, moderate with psychotic features (DSM-IV 296.64) and panic disorder without agoraphobia (DSM-IV 300.01) died as a result of an accidental overdose. Upon histopathological examination of the brain, as an incidental finding, a small lesion (1 mm × 2 mm) composed of heterogeneous small lymphocytic cells (CD20-positive) including centrocyte-like cells, a few small lymphocytes and rare immunoblast-like cells