<prompt> Pure red cell aplasia is associated with:ThymomaRenal cell carcinomaHepatocellular carcinomaProstate carcinoma  <response>: -Pure red cell aplasia is a primary marrow disorder in which only erythroid progenitors are suppressed. -In severe cases, red cell progenitors are completely absent from the marrow. -It may occur in association with neoplasms, paicularly thymoma and large granular lymphocytic leukemia; drug exposures; autoimmune disorders parvovirus infection. 