I have a bump on the top of my right thigh about 6 inches down from where my leg attaches to my pelvic area. When I bend my knee it protrudes slightly at least enough to notice it. It does not hurt even wehn I press on it. It is solid in feel and is about 3 inches long and maybe 1 and 1/2 inches wide in the middle part and thins out. Could this be a cyst or cancer? I walk every day and get on my eliptical trainer a lot. Is it something to be concerned about