Conversation: The conversation between human and AI assistant.
[|Human|] Hi, I am a 39 yr. Old Male. I ve been experiencing tingling and numbness in my left hand and fingers for about a year now and a few months ago felt a hard lump on inner part of my upper left arm between my elbow and armpit. It s not painful, but what I due notice is I can only feel it when my arm is fully extended. When I bend my arm i can t find it. What could this be?
[|AI|]  Welcome to Chat Doctor I have gone through your query and understand your concern. You are likely to be having soft tissue swelling which may be pressing one of nerves supplying hand. It can be lipoma, cyst, neuroma etc. and may require excisional biopsy. MRI of left arm will be helpful in confirming diagnosis. You can discuss with your doctor about it. Hope your query get answered. If you have any clarification then don't hesitate to write to us. I will be happy to help you. Wishing you a good health. Take care.