URMC / Encyclopedia / Content Search Encyclopedia Blood Disorders Many hematology and blood disorders require clinical care by a physician or other health care professional. Listed in the directory below are some, for which we have provided a brief overview. If you cannot find the information in which you are interested, please visit the Hematology & Blood Disorders Online Resources page in this website for an Internet address that may contain additional information on that topic. Anemias Thalassemias Bleeding / Clotting Disorders Hemochromatosis Polycythemia Vera Thrombocythemia Leukemias Lymphomas