<prompt> In which leukemia, autoimmune hemolytic anemia is most common -ALLAMLCMLCLL  <response>: Autoimmune hemolytic anemia may occur as a complication of chronic lymphocytic leukemia.About 20 of cases of CLL develop a coomb;s positive autoimmune hemolytic anemia.This is due to the presence of warm antibodies Ig G that coat RBC;s that are reactive at room temperature .Red cells coated with Ig G along with C3 on its surface fuher promote red cell-leucocyte interaction ,accounting for more severe hemolysis.Harsh mohan textbook of pathology sixth edition pg no 312. 