Swollen Achilles from ankle to mid-calf. MRI normal. Doctors say they cannot see size difference. 2 PT's say they see + feel difference. What is this?

See Specialist. who is trained in sports medicine that can evaluate why your Achilles hurts and maybe swollen. They might need to perform a diagnostic ultrasound evaluation to look at the tendons and soft tissue in real time to see what's going on.