Treatment of recalcitrant plantar warts with long-pulsed Nd:YAG laser versus cantharidin-podophylline resin-salicylic acid.

Background: Treatment for recalcitrant plantar warts remains a continuing challenge as the options for treatment have differing levels of success. long-pulsed Nd:YAG laser is considered a good treatment modality in resistant plantar warts. On the other hand, high cure rates have been reported with a topical proprietary formulation consisting of 1% cantharidin, 5% podophyllotoxin, 30% salicylic acid.

Aim: To compare the efficacy of 1% cantharidin, 20% podophylline resin and 30% salicylic acid (CPS) versus long-pulsed Nd:YAG laser in the treatment of recalcitrant plantar warts.

Methods: This study included 30 patients with single or multiple recalcitrant plantar warts; patients were assigned to two groups: the first group included 15 patients with 71 recalcitrant plantar warts who were treated by long-pulsed Nd:YAG laser (group I) and the second group included 15 patients with 78 recalcitrant plantar warts who received CPS (group II). The diagnosis of plantar warts was made by clinical examination.

Results: Fourteen patients (93%) were completely cleared of their warts with topical CPS, while 11 patients (73%) showed complete clearance with long-pulsed Nd:YAG laser with statistically significant difference between the two groups.

Conclusion: Topical CPS is safe and efficacious and represents a promising therapeutic modality than long-pulsed Nd:YAG laser in the treatment of recalcitrant plantar warts.