Welcome to Just Answer and thank you for the question.
I am Dr. Sohaib, a Medical Internist (who deals with diseases of all the organ
systems of body) and i will do my best to find an answer for you.
Sorry to hear about this.
I assume from your description that the most concerning issue for you right now is the cosmetic appearance due to the dilated vein you see on the penis, and i would have been anxious too if i were at your place.
This is not something which you can call abnormal, rather this is common finding amongst males. However, this needs a careful clinical examination to differentiate it from penile varicose vein.
If this does not hurt you, or causes any other problems during intercourse, then probably this does not require any treatment at all.
In some situations, such as a varicose vein, this can be treated surgically by means laser stripping, vein stripping, ablation, or sclerotherapy.
Like with any medical procedure there are chances of complications (such as scar formation), but in expert hands and with modern techniques, the chances are minimal.
You should see your doctor, preferably a vascular surgeon, and have a clinical evaluation done in detail, which will direct further specific and targeted management plan that will suit best to your needs.
Wish you good luck.
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