Question: Im a 28 yrs old male with no past history of any medical problems... and about 2 months ago I noticed a small pin sized nodule on the bottom side of my penis just below the frenulum. This Small nodule is connected on the interior to a hard vein/vessel which seems to be about 1/2 inch long. This hard vein/vessel is not able to be seen as it extends subcutaneously towards the head. Upon palpation of this nodule and vein/vessel an oily semi-clear fluid began to come out of the pin sized hole in the nodule. The nodule is much more present after masterbation and is much less apparent when flaccid. There is no pain what so ever associated with this nodule and there is also no urethral discharge either. I have read about penile thrombosis and penile lymph nodes but still havent been able to pin point my condition. Any and all advise would be greatly appreciated.

Thanks for the reply. I would like to further clarify that the nodule is on the surface and the hard vein/vessel is under and unable to be seen. From what i can find on the web other subcutaneous nodules are much larger and don't have a head on the surface where the oily substance can be secreted. Although I've left it alone for the past few days and the head has seemed to heal over not allowing any secretion the hard vein/vessel underneath remains unchanged. I've attached a picture to hopefully help in your diagnosis. I would like to know on the bad side of things what this may be even if you feel it is a non STD. thanks

Thank you for the response. My only question now is if I don't proceed with surgery... should I leave it alone? Should I drain it regularly? Will draining it lead to further issues, or help with the flushing of the fluid build-up? Thanks