I recently noticed a medium sized lump (half-dollar) on the front of my right thigh midway between my groin and my knee.  It cant be seen, only felt.  I also have been having pain (ache) when I stand too long radiating into my groin and down to my knee.  Could this be varicose veins?  My mother and sister have a history of that but theirs were very visible.
Hi, dairy have gone through your question. I can understand your concern. You may have some soft tissue tumor like lipoma, neurofibroma or dermatofibroma or some malignant mass like liposarcoma.  You should go for fine needle aspiration cytology or biopsy of that lump. It will give you exact diagnosis. Then you should take treatment accordingly. Surgical excision is the treatment of choice. Consult your doctor and take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health.