how can I simulate 3D breast models in HFSS?

I am starting to mess with HFSS and need to figure out how to simulate 3D breast models and measure scattered fields, etc...Any help would be appreciated. Also, where I can find 3D models of the breast to use in HFSS?

I to need to know how to design the breast model in HFSS. I know only the values of permittivity and conductivity of skin, tissue only. Is it enough to add those materials in material library. How can I get the current density graph.Please give any idea about this. Thanks in advance.