Does a granuloma caused by dissolvable internal sutures require surgical removal?

6 weeks ago I had minor surgery for a thrombosed vein on the shaft of my penis. In my followup today my surgeon diagnosed me with a granuloma from my body reacting to the dissolvable sutures. It is quite swollen and a hard lump fully under the skin roughly 1 cubic centimeter in size. The surgeon said he can do another procedure, or see if it heals on its own, but would not advise what I should do. Should I have it removed or wait? Also, if I have it removed, how can I prevent another granuloma?