<s>[INST] My wife has a lump on her blood vessel on her right hand, three days after a vicious cat bite on the opposite side of her body and one day after getting antibiotics and a tetanus shot on the cat bite side. Is this related? It s not bruised, just a lump and only hurts when she pushes in on it, [/INST] HiThanks for your query.Based on your query, my opinion is as follows.1. Lump on the right hand if its not related to injection site, then it is probably a ganglion or soft tissue swelling like lipoma( fatty lesion). 2. If it is painful hot fomentation and analgesics will relieve the discomfort.3. If it increases in size, get it examined and if necessary go for removal.Hope this helps.Regards </s>