Clinical indications of splenic irradiation in haematological disorders include the irradiation in lymphoproliferative disorders with spleen infiltration, palliative treatment of splenomegaly in malignant diseases like chronic lymphocytic leukaemia or myeloproliferative disorders, with the purpose of relief from abdominal pain associated with capsular enlargement size and decrease cytopenias secundaries to hypersplenism.This paper reports our experience with spleen irradiation in the Hospital General Universitario Gregorio Marañón in the last five years, and analyzes indications, results and toxicity, and an actual review of the literature.