Fig. 1

Diffuse large B-cell lymphoma in the cervical lymph node. a The node architecture was effaced by diffuse infiltration lymphocytes. b Higher magnification of the boxed area in (a) reveals diffuse infiltration of the medium and large lymphocytes. c Immunostaining revealed that the lymphocytes were positive for CD20. d In situ hybridization showed that these cells were positive for EBV-encoded small RNA (EBER). b-d Serial sections. Scale bar: 2 mm (a), 60 μm (b-d)