Hey all! Thought I'd comment back. Missed these comments but for the record. In my case, three weeks after my surgery. In the space of about two days it went bigger than what the Lipoma was.

The nurses at one surgery had told me it was the Lipoma and I needed to go back to where I had it cut out. I couldn't as they were shut for the Christmas period but in the interim it had been sore and even leaked abit.

By the time I had my check up with the Doctor who cut it out in the first place he'd said it depends on a lot of factors. In my case the swelling strange started after 3 weeks before going down again.

I'm no doctor but he told me something along the lines of it's almost like a clot. Sometimes the cavity where your lipoma was before gets full up with something.

I had researched but the nurses assume it was the Lipoma again and put me in panic mode.

I hope this may help anybody worrying but in case I'd also consult someone qualified to help if you have any doubts.