Subclinical papilloma viral infection of male genitalia.

One hundred male patients with a history of genital condylomata were evaluated by the use of 3% acetic acid staining of their external genitalia. In 36 per cent positive aceto-white areas were discovered on the shaft of the penis (flat condylomata), and a 35 per cent meatal-urethral involvement, suggesting that flat and exophytic condylomata of the shaft and urethra are the most logical reservoir for transmitting the HPV infection to the female genitourinary tract.