My son has lump on his right upper stomach area with bruising.  He says there is no pain in the area even when touching the lump.  The bruising was deep purple but is now fading but the lump persists.  He says he has no memory of injuring himself.  Ay idea what this might be.  He is an otherwise healthy 23 year old.
Hi! Good evening. I am Chat Doctor answering your query. Possibly your son might have had some kind of trivial trauma which he did not remember, but sustained a hematoma which might be resolving now. You can wait and watch the lesion. This might get dissolved completely. If it persists or increases, then I would advise you to get is assessed clinically by a general surgeon who might go for an FNAC if need be to arrive at a diagnosis. I hope this information would help you in discussing with your family physician/treating doctor in further management of your sons' problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing Chat Doctor to clear doubts on your health problems. Wishing you an early recovery. Chat Doctor.