I've posted about parts of this problem before, but decided to start fresh.
Over the past 4 months, I have had to remove my PM 3 times.
The first time, it was healed beautifully for 3 months. The scar line became red over a week or so, and although the blood and serum cultures came back negative, my doc decided to explant it. Turned out he did the right thing.
The second time, now under my right collar bone, it became inflamed right away.