Increased angiogenesis is important in the pathophysiology of solid tumors as well as haematological malignancies. Different angiogenic factors were found to cause increased angiogenesis. By measuring these factors in patients of haematological malignancies, they were found to be increased compared to normal controls.This led to increased angiogenesis in the bone marrow of these patients. These facts can be used in the prognosis of haematological malignancies. Antiangiogenic agents can be used in the treatment of these patients, which decreases the doses of chemotherapy.