My husband has what looks like a blister filled with blood on his inner thigh. It fills up and bleeds . We put pressure on it and a bandaid. It fills up again and so on. Now there appears to be brusing near by it which to me indicates some bleeding. My concern is cancer . His father died from melanoma . So I am looking for pictures with diagnosis.
Hi Young, Thanks for writing in to Chat Doctor ! One important thing is if it developed suddenly say overnight or after a strenuous activity it is unlikely to be cancer rather it is just a blood filled bruise and will subside in a week. If it has been there for quite some time say over a weeks duration and if aroused from a mole, or he has similar lesion else where then he may be having a melanoma particularly in refence to strong family history, and you must visit to a dermatologist as soon as possible. It would be helpful for me to provide a stronger opinion if you could load a photograph in a follow-up query. If you have any further query please let me know I would try to answer it for you.  Wish you a great health!