What are possible complications of orchitis?

Updated: Aug 16, 2017
  • Author: Nataisia Terry, MD; Chief Editor: Erik D Schraga, MD  more...
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Up to 60% of affected testes demonstrate some degree of testicular atrophy. Impaired fertility is reported at a rate of 7-13%. Sterility is rare in cases of unilateral orchitis. An associated hydrocele or pyocele may require surgical drainage to relieve pressure from the tunica. In one study of 7 patients who were followed after mumps orchitis (4 unilateral, 3 bilateral), in the unilateral orchitis group, 1 patient had an atrophic testis, 3 had severe oligozoospermia, and 1 had mild oligozoospermia. In the bilateral orchitis group, none had atrophic testes, and findings of semen analysis revealed azoospermia in 1 and severe oligozoospermia in 2 patients. Findings of semen analysis in most patients improved gradually. [19]

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