I have aneurysm of the left basilic vein doctor can perform an aneurysmectomy. Need second doctor opinion? admin Posted on Posted in General, Medical Questions, Second Doctor Opinion 4 Comments I’ve had a lump in my forearm for about a decade that was diagnosed as an aneurysm of the left basilic vein. It gets larger when I play sports or lift weights. The doctor can perform an aneurysmectomy or leave it alone. What do you recommend?