Density of viral particles in pre and post Nd:YAG laser hyperthermia therapy and cryotherapy in plantar warts

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BackgroundWarts often present a difficult treatment problem for clinicians because of the lack of specific antipapillomavirus agents. Plantar warts, in particular, represent a therapeutic challenge.MethodsTwenty-five patients with plantar warts were treated with Nd:YAG hyperthermia and another 25 were treated with cryotherapy. Biopsies were taken before and after treatment in both groups and were examined for the presence of human papillomavirus deoxyribonucleic acid (HPV DNA) using in situ hybridization (ISH).ResultsHPV DNA was detected in 100% of untreated warts and in 96% of cryotreated warts, but was not detected in any of the hyperthermia-treated warts.ConclusionsHPV is more vulnerable to hyperthermia than to cryotherapy.

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