the way I see it the best option to design tumor is python, since you can change everything on it easily such as size, color and so on. I wish you success.
Hi, my expertise is mainly in mathematical modeling and analysis (growth models, reaction–diffusion equations, parameter estimation, etc.), rather than in geometry creation with Python.I would be very interested to collaborate:
I can provide the mathematical framework (tumor growth/invasion models, PDEs, parameter fitting).