{Reference Type}: Case Reports {Title}: Primary testicular Ph-positive B lymphoblastic lymphoma: an unusual presentation and review. {Author}: Zhu J;Zhang S;Zhu L;Li X;Wang Y;Duan Y;Huang W; {Journal}: Cancer Biol Ther {Volume}: 16 {Issue}: 8 {Year}: 2015 {Factor}: 4.875 {DOI}: 10.1080/15384047.2015.1056412 {Abstract}: Primary testicular B-lymphoblastic lymphoma is a rare entity. Primary testicular Ph-positive B lymphoblastic lymphoma was not reported before. We reported a 27-year-old man with primary testicular Ph-positive B lymphoblastic lymphoma, for which fluorescent in-situ hybridization (FISH) for the Philadelphia chromosome was not performed at the initial hospitalization. The patient showed manifestation of Ph-positive acute lymphoblastic leukemia at relapse. In this report, we reviewed the current literature about primary testicular B-lymphoblastic lymphoma, Ph-positive lymphoma and Ph-positive clone evolution. This report has 3 meanings. First: This is first report on primary testicular Ph-positive B lymphoblastic lymphoma. Second: This shows the importance of cytogenics for lymphoma treatment. Third: This implies Philadelphia-positive subclone evolution.