197347.fig.001a
(a)
197347.fig.001b
(b)
197347.fig.001c
(c)
Figure 1: Primary mediastinal large B-cell lymphoma. (a) Hematoxylin and eosin (50X). Primary mediastinal B cells (PMBC) associated with delicate interstitial fibrosis. (b) PMBC immunoreactivity for B cell antigen on the membrane, CD20. (c) PMBC immunoreactivity for CD30.