Precursor B cell lymphoblastic lymphoma presenting as a solitary bone tumor: a case report and review of the literature.

Precursor B cell lymphoblastic lymphoma (B-LBL) is quite uncommon and it usually manifests as an extranodal disease. Although B-LBL may present with bone involvement, it is a very rare manifestation of B-LBL as a primary solitary bone tumor. Here, we report a case of precursor B-LBL presenting with solitary bone tumor and a review of a total of seven adult patients reported previously in the literature.