Hi there. I, too, have developed a seroma after a groin sentinel lymph node biopsy. My melanoma was on the back of my leg just above the knee. The biopsy came ack clear, and I am so grateful for that. But now I am dealing with lymph edema and a huge seroma. It is about the size of a lemon and getting more painful. My surgery was 1/16 so you are a little ahead of me. How is your seroma now? Any advice or tips? I have found the same thing — very little about groin seromas. I sure hope you are past your seroma.
