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Carbon Dioxide Laser Treatment Using Methylene Blue-Assisted Sinus Tract Identification in Hidradenitis Suppurativa.

The authors read with great interest the communication inDermatologic SurgerybyDrs.Grimstad and Ingvarsson, regarding the use of methylene blue stain for the visualization of fistulas during CO2 laser treatment of patients with hidradenitis suppurativa (HS). The use of CO2 laser for the treatment of HS was first published as early as 1987. The technique is simple, rapid, and safe and is widely available in dermatology clinics today. The CO2 laser can be used in cutting or vaporization mode in conjunction with marsupialization and cutting electrocoagulation.