Abstract
11 case studies of polycythemia and a discussion of 6 cases of polycythemia previously published are presented. All of the 17 cases of polycythemia have had satisfactory remissions of the disease process and the associated manifestations (such as acne urticata poly-cythemic, leg ulcers, gastric hemorrhages, etc.), following the intraven. adm. of radioactive Ph. A case of polycythemia secondary to the Banti''s syndrome is presented.