"primary site of extranodal disease (primary testicular lymphoma)"
"Waldeyer ring"
Expected headings
"Microscopy"
"Positive IHC markers are CD19, CD20, CD79a, PAX5, BCL6, MUM1 and BCL2. Negative IHC markers are CD30, SALL4, CyclinD1, and Pan T cell antigen 7,8."