A disease involving the hematopoietic system.

Synonyms: hematological disorder disorder of hematopoietic system hematopoietic system disease or disorder hematopoietic disease hematological system disease disease of hematopoietic system blood disorder blood disease hematologic disease rare hematologic disease hematologic and lymphocytic disorder disease of the blood and blood-forming organs hematologic disorder blood dyscrasia hematopoietic system disease hematological disease disease or disorder of hematopoietic system