c) Non-Cutaneous T Cell Lymphoma

The principal category in this topic is Peripheral T Cell Lymphoma, not otherwise specified. A small minority are ALK positive which have a better prognosis.
T Cell lymphomas consist of malignant T cells expressing CD2, CD3 and CD5. The architecture is diffuse. There is often an infiltrate of myeloid cells (neutrophils, eosinophils, macrophages), presumably attracted by inflammatory cytokines produced by the lymphoma cells.