P482: Steatocystoma multiplex of the forehead successfully treated with a 1,927-nm diode laser

Steatocystoma multiplex (SM) is characterized by multiple, dermal cyst that has characteristic sebaceous component in their epithelial cystic walls. Simple excision or incision and drainage are the general therapeutic approach, but scarring can be cosmetic concern especially if the size of SM is over 5 mm. A 1,927-nm diode laser (XLENDER ® laser, Won Tech., Daejeon, Korea) was recently introduced for the benefits from relatively selective fat and water absorption than previous devices. In addition, this device is fiber-type, so it can efficiently deliver its energy into the cyst walls. Therefore, it can be one of the treatment modalities for the SM. A 41-year-old man presented with numerous skin-colored nodules on forehead, neck, and trunk which have lasted 10 years. A biopsy specimen from the forehead lesion showed typical SM histology. For the facial SMs, we performed the laser treatment with the novel 1,927 nm diode laser rather than the traditional surgical procedures due to the numerous number, larger size, and cosmetic concerns. After 5 sessions of treatment during 4 months, the facial SMs were clinically improved without recurrence until 5 months after treatment. Histopathologic examination of the laser-treated site revealed disappearance of cystic structures. Herein, we present a case of SM successfully treated with a 1,927nm diode laser which has not been reported in the literatures.