I discovered a hard lump in my navel and removed it with twizzers and with a lot of difficulty it came out. The top that was exposed was black and very hard however, the end of it was about 3/4 inches long and soft. It was rather scary and now I wonder if I should take it to a doctor.
Hi, thanks for sharing your health concerns with Chat Doctor!  If I were your treating Doctor for this case of an inverted hard navel lump, I would come up with two possibilities:1.a sebaceous cyst! Nothing to worry about this and try not to get infected there!2. A skin papilloma or fibroepithelial polyp or neurofibroma; these are also benign and not to worry at all! Well, this is a fairly common benign disease of the skin/skin appendages ; however, in worse case it could be some neoplastic condition or lymph node also! I suggest you to go for an FNAC test of the lump for confirmation and to relieve your concerns! Hope this answers your question. If you have additional questions or follow-up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.