In May I developed a pain in my left foot. Over a 3-4 week period, it went from a dull pressure to a sharp pain that I eventually couldn't walk on without wearing a donut pad. It felt like I was stepping on a piece of my kids lego with every step.
I was running a few times a week and a little MTB at the time this developed, no major training.

My doctor thought it was a callus... I used callus pads to kill the skin in the area, that didn't help.

I went to a Podiatrist... he said it was a cyst and surgery would be required... see pictures. He cut out what you see in the picture. It was solid... not something that could be drained.

The post surgery pic was one day after... it took about 4 weeks to heal and I slowly got back into running without any issues.

3.5 months after surgery, it's coming back. The pain has been noticeable for the past week. I have been running ~60k a week for the past 6 weeks.
I have circled the area of concern in one pic and then the 3 specific areas where I can feel small lumps that are sensitive to touch.

It isn't at the point where it is preventing me from running yet but it's getting worse.

Is it really a cyst like the Podiatrist thought? Why is it growing back? What can I do to deal with this?

Thanks for any help in advance!!

https://drive.google.com/...IwI0hbX8xtb06mcZ32u2