MYC Negative Rectal B-Cell Lymphoma, Unclassifiable, with Features Intermediate between Diffuse Large B-Cell Lymphoma and Burkitt’s Lymphoma in an Immunocompetent Patient
Figure 1
Histopathological evaluation. H&E stained sections show a monomorphic mucosal lymphoid proliferation with numerous mitotic figures (a). The lymphoid cells reveal positive immunoreactivity for Ki-67 (~100% positivity, (b)) and Bcl6 (inset, (d)); however, Bcl-2 immunostain was negative. EBER by in situ hybridization was also negative (c).
