[Pigmented lesion on the temple. Pigment cell tumor, basal cell carcinoma, or irritated seborrheic keratosis?].

33-year-old woman with a red-brown plaque on the temple. The slightly raised skin tumor with well-defined margins had appeared 3 years earlier, slowly enlarging and finally changing in color. Digital enhancement revealed a vascular pattern with hairpin-like and twisted fine capillaries. Often, there were light halos and slate-gray granules (melanophages) around the vessels. Biopsy of the tumor demonstrated hyperplasia of the epidermis and normal basaloid keratinocytes partially extending into the dermis. Inflammatory cells and melanophages were present in the papillary dermis, surrounding dilated vessels. Histopathological diagnosis revealed an irritated seborrheic keratosis.