Acetowhite lesions in the vulva disclosing koilocytosis have been rela
ted to infection by human papilloma virus (HPV). Because of the clinic
al resemblance of these lesions to oral hairy leukoplakia (OHL), and E
BV-manifestation, 23 women with acetowhite koilocytotic lesions in the
vulva were examined. The PCR-technique was used to detect EBV DNA as
well as HPV DNA in 17% of 23 patients examined. In a control group of
19 patients EBV DNA was detected in 11% and HPV DNA in 42% of cell sam
ples from normal vulvar mucosa. EBV DNA has not previously been demons
trated in the vulvar mucosa, and this virus might be related to subcli
nical acetowhite lesions.