Acute epididymitis: etiology and therapy.

Fifty patients with acute epididymitis were evaluated prospectively by history, examination, and microbiologic studies, including cultures for aerobes, anaerobes, N. gonorrhoeae, Chlamydia trachomatis, and Ureaplasma urealyticum. E. Coli was the predominant pathogen isolated from the urine of men over 35 years old and C. trachomatis and N. gonnorrheae were the predominant pathogens isolated from the urethra of men under 35. The etiologic role of E. Coli and C. trachomatis was confirmed by isolation from epididymal aspirates from a high proportion of men with positive urine of urethral cultures for these agents. C. trachomatis epididymitis accounted for two thirds of "idiopathic epididymitis" in men, and was often associated with oligozoospermia. Of nine female sexual partners of men with C. trachomatis infection, six had antibody to C. trachomatis, of whom two had positive cervical cultures for this organism, and the others had nongonococcal pelvic inflammatory disease. Antibiotic therapy with tetracycline was effective for the treatment of men with C. trachomatis epididymitis, and should be offered to their female sex partner.