A Clinicopathology Review and Update of Epstein–Barr Virus-Associated Mesenchymal Tumors.

Simple Summary: Despite an in-depth understanding of Epstein–Barr virus-associated epithelial and lymphoid tumors, there is a paucity of knowledge concerning mesenchymal tumors associated with the Epstein–Barr virus. Our objective with this review article is to provide a comprehensive reference, offering current insights into the clinical features, pathological characteristics, pathophysiology, prognostic factors, and current therapeutic approaches of Epstein–Barr virus-associated mesenchymal tumors. The Epstein–Barr virus (EBV) is associated with various tumor types, including nasopharyngeal carcinoma and lymphoproliferative disorders. While much is known about EBV-related epithelial and lymphoid tumors, there is a paucity of knowledge concerning EBV-associated mesenchymal tumors. This review aims to provide a comprehensive overview of EBV-associated mesenchymal tumors, encompassing their clinical features, pathological characteristics, pathophysiology, prognostic factors, and current treatment approaches. Through an extensive literature search using the PubMed database, we were able to identify three distinct EBV-associated mesenchymal tumors: EBV-associated smooth muscle tumors, inflammatory pseudotumor-like follicular dendritic cell sarcomas, and EBV-associated osteosarcomas. Although this review extensively explored the different aspects of these mesenchymal tumors, our comprehension of the underlying pathophysiology in this context is still incomplete. Therefore, we hope that this review paper will not only serve as a valuable repository of information but also serve as a catalyst for prospective in vitro and in vivo research studies to bridge the existing knowledge gap surrounding pathophysiology, ultimately making an important contribution to shaping future therapeutic approaches. [ABSTRACT FROM AUTHOR]