Answer to Question 1
ANS: D
Prevalence in the United States is about 50 in men 60 years and older and 90 among men 70 years or older. BPH is common and involves a complex pathophysiology with several endocrine and local factors and remodeled microenvironment, but its relationship to aging is well docu-mented. Risk factors for BPH do not include prostatitis, a diet high in fat, or cigarette smoking.
Answer to Question 2
ANS: C
Mumps is the most common infectious cause of orchitis and usually affects postpubertal males. Herpes would not result in testicular swelling. Escherichia coli infection would not result in tes-ticular swelling and redness. Cytomegalovirus is a sexually transmitted disease and is not mani-fested in testes.