The Significance of the Microenvironment in T/Nk-Cell Neoplasms

T/NK-cell neoplasms represent rare and highly diverse cancers, distinguished by variability in their molecular architecture, local inflammatory milieu, and microenvironmental composition, which collectively underpin the diversity of clinical presentations and outcomes. The neoplastic tissue comprises malignant lymphoma/leukemic cells in concert with a spectrum of stromal elements and the acellular extracellular matrix (ECM), collectively constituting the lymphoma microenvironment (LME). These components engage in dynamic, reciprocal interactions, forming a self-regulating ecosystem capable of responding adaptively to both exogenous and endogenous stimuli. Historically, the LME was largely neglected in considerations of lymphomagenesis; however, emerging evidence highlights its pivotal role in driving core oncogenic processes, including sustained proliferative signaling, angiogenesis, immune evasion, and apoptotic resistance. Deciphering the intricate, multidirectional crosstalk among the cellular and acellular constituents of the T/NK-cell neoplastic microenvironment promises to deepen our understanding of disease biology and may inform the development of novel, mechanism-based therapeutic interventions.