Hi, I was diagnosed in June last year with stage 2 Melanoma on leg but it spread to my lymph nodes in my groin in August. Had wide incision and lymph node removal in October. Started immunotherapy in December every 6 weeks. Have had 2 treatments with a good few side affects. Just had a scan which showed lymph node highlighted with the dye which was 4mm but now 7mm. The doctors don’t seem concerned but will monitor every 3 months with scan. I’m due my next treatment next week and am very worried the treatment is not working. If anyone could advise? Thanks x