Hi, Thank you for posting your query in healthcaremagic.com This is Dr. Swarnava dattagupta answering your query. I understand your concern. See, with increased age, the prostate generally grows in size, what we call the benign prostatic hyperplasia. But an enlarged prostate will not always present with symptoms. It has to obstruct the urethra to cause difficult or frequent voiding or even residual urine. The residual urine or the obstruction sometimes leads to infection due to stagnant urine. But in general, an UTI is much more common than prostatitis. So, probably UTI was present with a concurrent enlargement of prostate, and UTI could have lead to prostatitis if any, though there was no such symptom. Hope i have answered your question. If you have any further questions i will be happy to help. Regards