Diagram of abdormal white blood cell?

Many different types. Here are some examples: http://upload.Wikimedia.Org/wikipedia/commons/thumb/0/0e/acute_leukemia-all.Jpg/230px-acute_leukemia-all.Jpg http://upload.Wikimedia.Org/wikipedia/en/2/2f/schematic_showing_the_appearance_of_acute_myeloblastic_leukemia%2c_m0_under_microscope.Jpg in general, there is a fairly consistent look to all normal blood cells of a given type, and a wide variety of abnormal types.