AboutStephen W. Leslie, MD Expertise Questions concerning erectile dysfunction, kidney stones and prostate disorders including prostate cancer. I have a special interest in kidney stone disease prevention.
Experience Full time practicing urologist with 20 years experience. Assistant Clinical Professor of Urology at the Medical College of Ohio. Editor in Chief of eMedicine Urology internet textbook. Author of only 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.
Organizations American Urological Association, Ohio State Medical Association, Sexual Medicine Society
Publications 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.
Education/Credentials 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.
Question My boyfriend has a problem starting his stream of urine and is slightly painful, but mostly during sex he gains a erection, and when he feels like he needs to ejaculate a hard knot forms on one side of his penis, then the knot gets mushy and moves back down the shaft but he feels as if hes ejaculated but nothing comes out. He is almost 40 yrs old and we do have a very active sex life.
Answer Voiding problems with the stream are relatively common. Prostatitis would be most common in this age group. I can't explain the "knot" except that it could represent a urethral diverticulum together with retrograde ejaculation. This would be exceedingly rare but not impossible. He should consult a urologist for a definitive answer.
