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Urology/small soft/hard lump on the underside of the head of the penis


I'm in my mid-20's and was wondering if you could help to identify what this small lump is?
It's located on the underside of the head of the penis on the right hand side. Its completely unnoticeable when the penis is flaccid, but more prominent when erect.
As far as I can tell the lump is soft and it has been there for just over a week now.

I do suffer from very slight phimosis, I can retract my foreskin when flaccid, less so when erect, although I do believe it has cause my penis to curve slightly to the left. I also do masturbate on occasion, so I'm not sure if the friction has caused it or not.

Thank you for your time.


We cannot make diagnoses of skin lesions or lumps on this forum.  You'll need to have a local physician check it out to be sure.

However, most soft lumps in the genitals are quite benign and are rarely anything serious.

Phimosis rarely, if ever, causes a curvature.  you could have some other reason for the curve such as early peyronie's.


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Stephen W. Leslie, MD


Questions concerning erectile dysfunction, kidney stones and prostate disorders including prostate cancer. I have a special interest in kidney stone disease prevention.


Full time practicing urologist with 30 years experience. Associate Professor of Surgery and Chief of Urology at Creighton University Medical Center. Editor in Chief of eMedicine Urology internet textbook. Author of only NIH approved book written for patients by a urologist on the subject of kidney stones "The Kidney Stones Handbook". Inventor of the "Parachute" and "Escape" kidney stone baskets and the "Calculus" stone prevention analysis computer program.

American Urological Association, Ohio State Medical Association, Sexual Medicine Society

Men's Health, Journal of Urology, Urology, Healthwatch Magazine, Emergency Medicine Monthly, eMedicine, "The Kidney Stones Handbook", and numerous articles in various newspapers. He is also the editor of the Urology Board Review by McGraw-Hill used by urologists to study for their Board Certification Examinations.

Graduate of New York Medical College with residencies completed at Metropolitan Hospital New York, Albany Medical Center and University of Wisconsin-Madison.

Awards and Honors
Thirlby Award of the American Urological Association. Rated as one the country's Best Urologists by the Independent Consumer's Research Institute

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