Case Report
Tibial Plasmablastic Lymphoma in a HIV-Negative Child: A Novel Extraoral Localisation
Table 1
Panel of immunohistochemical markers performed and results are as follows.
| CD138 | Diffuse strong positive in neoplastic cells |
| CD38 | Positive in few neoplastic cells | CD56 | Negative in neoplastic cells | Ki-67 | Increased proliferative index approximately 98% | Kappa and lambda | Monoclonal pattern of distribution with kappa strong positive in neoplastic cells | CD20 | Negative in neoplastic cells. Highlight mature B-lymphocytes in background | CD79a | Negative in neoplastic cells | PAX-5 | Negative in neoplastic cells | CD30 | Negative in neoplastic cells | Alk-1 | Negative in neoplastic cells | CD3 | Negative in neoplastic cells. Highlight mature T-lymphocytes in background. | CD45 | Negative in neoplastic cells | CD5 | Negative in neoplastic cells |
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