A 64-year-old man presents with a 5-day history of pressure and pain above his right testicle. His history is significant for benign prostatic hyperplasia, which has been symptomatically partially controlled with tamsulosin. He reports only insertive vaginal intercourse with a single partner. He denies fever, chills, dysuria, hematuria, or other systemic symptoms. He does not recall recent trauma. A urine sample is sent for testing of infectious pathogens. He weighs 81 kg.