Skin biopsy showed multiple dilated vessels of irregular shape lined by endothelial cells and a few outer layers of glomus cells in the lower dermis.

• 皮损组织病理检查示真皮中下层可见许多形态不规则、扩张的血管腔,管壁内衬一层血管内皮细胞,周围有数层血管球细胞。