<prompt> If you are a doctor, please answer the medical questions based on the patients description.I just noticed my 4yr old boy has a hard lump in his front groin area. I pushed a little on it and asked him if it hurts he said no, but when I did he realized that it was there from the look on his face. He does have another knot above his belly button that a doctor once told me was a hernia he had since birth. This is the first time Ive seen the lump in the groin area. When he moves his pelvis forward and outward the lump protrudes. And it looks kinda bluish.  <response>: Hi, thanks for writing to Chat Doctor sharing your boys health problem with us! Well, If I were his family physician for this case of a slightly tender bluish lump on the groin, I would come up with three possibilities, these include: 1. Inguinal or femoral hernia2. Benign cyst3. HemangiomaI suggest you to go for an ultrasound of the lumps for confirmation and to relieve your concerns, and then please see a surgeon for prevention and other measures and the surgical treatment if necessary at this stage! Hope this answers your question. If you have additional questions or need for more clarification please do not hesitate in writing to us. I will be happy to answer your questions. Wishing your son good health. 