MS4A1 and neoplasm: The levels of immunohistochemical markers on the tumor cells showed LCA (+), CD20 (+), CD79a (+), Bcl-2 (+), Bcl-6 (30%+), MUM1 (+), FLI-1 (+), CD15 (focal+), Ki-67 (hotspot 90%+), P53 overexpression (+), CD5 (−), CD10 (−), CD23 (−), Cyclin D1 (−), PD-1 partial (+), CD21 (−), CD30 (−), and Epstein-Barr virus (EBV) (−).