Seroma! Any tips?

Hi Barb, I had a very annoying seroma post mastectomy. My GP thought I had an implant when he first saw it. Anyway, a friend who works with the elderly told me about Arnica gel. Apparently it's popular for the use of swollen ankles. I used it on my seroma. It did not reduce it, however it did reduce the tension very quickly across my chest. It's a natural product and you can buy it in the chemist. Hope this helps. Mandy