DEAR EDITOR, A 26-year-old woman presented with an asymptomatic linear atrophic lesion on the lower part of the right cheek. The lesion was of nine years' duration and had a very slowly progressive course. The lesion appears as multiple grouped skin-coloured pits taking a linear distribution, measuring about 6 cm in length and following Blaschko's lines. Few open comedones were seen within these pits. A skin biopsy was performed. Histopathological examination revealed cords and strands of basaloid cells arising from the hair follicle infundibulum, extending into the upper dermis and surrounded by scant fibrocellular stroma with no retraction. No cellular atypia or atypical mitoses were noted. S. EL B E H