Conversation: The conversation between human and AI assistant.
[|Human|] I have had this lump on my leg for 5-6 months now. I had a hard blow to the leg and a huge bruised formed and now there is now a dent where I got hit. Further down is the lump. It is around the size of half a tennis ball. The skin is also a bit numb where it is. I have booked for an ultrasound, but is there anything I should be worried about? It doesn t hurt to touch.
[|AI|]  Welcome to Chat Doctor. 1. The history suggest the possible cause of the lesion at the site of the previous injury could be infective collection. 2. Though there is no history mentioned pain or fever infective etiology to be ruled out.3. Other possible cause could be lipomatous lesion - fat content.4. The Ultrasound examination is the investigation of choice in this case, ultrasound will help to evaluate the nature of the lump, its source and extensions.5. First thing one has to examine the lump, I do not think there is much to worry as there is no pain on touch. Good luck. Hope I have answered your query,anything to ask ? Do not hesitate to ask.http://doctor.ChatDoctor .com/doctors/ Chat Doctor.