Hello, I have a small, painless mass about 1-2mm in size just proximal to the coronal sulcus on one side of the penis. The mass is mobile and very hard, and the best I can describe it is that it feels as though it is a ball in a mess of veins. Also, the skin looks swollen over the mass and is definitely larger than normal. I would say the onset is less than a day since I did not notice it last night; is this something urgent that needs to be seen immediately? The only medication I take is Asacol HD (mesalamine) and Canasa, both for controlled Ulcerative Colitis.