A case of clonal seborrheic keratosis with characteristic dermoscopic features

To the Editor:A 40-year-old woman presented with a gradually enlarging red oval plaque with a rough surface on the lateral aspect of the left leg for 4 years.No ulceration,crust,exudation,or bleeding was seen.Physical examination showed the lesion was a well-defined,red flat plaque,1.5 cm×1.0 cm in diameter,medium hardness,and non-tender[Figure 1A].There were no systematic abnormalities and the patient had no complaints of pain or itching.Dermoscopic examination revealed multiple brown globules,dotted,and globular vessels on the red background.Several follicular keratotic plugs and multiple milia-like cysts could also be seen.The lesion had a demarcated border[Figure 1B and Figure 1C].