A 28 year old male presents for evaluation of severe left te…
A 28 year old male presents for evaluation of severe left testicular pain and swelling that developed over the past two days. Vital signs are unremarkable. On exam, his left testicle is tender with normal lie. His right testicle is unremarkable. The scrotum is painful and edematous. Urinalysis shows 57 WBC/hpf and 14 RBC/hpf. Which of the following is the most likely diagnosis?