Adult T-Cell Lymphoma/Leukemia Presenting as Isolated Central Nervous System T-Cell Lymphoma

Figure 2

Microscopic findings of CNS T-cell lymphoma. Hematoxylin and eosin stain, 1000x. The lesions showed tissue necrosis and perivascular infiltration of atypical, medium-sized lymphoid cells (a). The lymphoid cells had strong membrane staining for CD4 (b), CD5 (c), focal positive for CD3 (d), and negative for CD20 (e).

(a)

(b)

(c)

(d)

(e)