I don't think hematologists study in depth about structural or compressive issues? Possibly more towards the chemical and diseases of the blood?

did a quick search...

[A medical specialist who treats diseases and disorders of the blood and blood-forming organs.

A physician specialized in disease of blood cells; most hematologists are also board certified in oncology Meat & potatoes diseases Anemia, leukemia, coagulopathies]
http://medical-dictionary.thefreedic...m/hematologist