Table 4 Summary of morphological and immunohistochemical patterns in 10 cases of unclassifiable B-cell lymphoma with intermediate features between classical Hodgkin lymphoma and diffuse large B-cell lymphoma
Patterns (number of cases) | Morphology | CD45 | CD20 | CD79a | CD30 | CD15 | EBV |
|---|---|---|---|---|---|---|---|
1 (1 case) | CHL-like | + | + strong, diffuse | + | + | + | − |
2 (2 cases) | PMBL-like | − | − | −/+ | +/− | + | + |
3 (6 cases) | Mixed CHL-like and PMBL-like | +/− | +/− | + | + | +/− | +/− |
4 (1 case) | Sequential composite lymphoma: CHL followed by PMBL | CHL− PMBL+ | CHL− PMBL+ | CHL− PMBL+ | CHL+ PMBL+ | CHL+ PMBL− | CHL− PMBL− |
