INTRODUCTION:
Chondrosarcoma represent the most common type of malignant lesions of the sternum[1]. Primary Bone lymphoma (PBL) is a rare localization of invasion by Non-Hodgkin Lymphoma cells. The most common histological type is represented by the Diffuse Large B Cells Lymphoma (DLBCL). The sternum is an exceptional localization for PB-DLBCL, accounting less than 1% of cases[2].
We represent the case of a primary sternal DLBCL mimicking a sarcoma with difficult assessment.