I have a small lump on my back. I have been observing this since last few years. Earlier it was of pea size but now slightly bigger. When I rub lump with fingers then a fouled smell could be felt. Please advise me whether the lump should be removed by surgery and it may be cancerous. I am mild diabetic and high B. P. And take medicine gleminor 1m and Telsar 40, 1 tab each a day. Sugar fasting110-120, bp 130/85.