label: Hepatosplenic T-Cell Lymphoma
label_lc: hepatosplenic t-cell lymphoma
description: An extranodal, mature T-cell non-Hodgkin lymphoma that originates from cytotoxic T-cells, usually of gamma/delta T-cell type.  It is characterized by the presence of medium-size neoplastic lymphocytes infiltrating the hepatic sinusoids.  A similar infiltrating pattern is also present in the spleen and bone marrow that are usually involved at the time of the diagnosis.