Figure 9: Most common dermoscopic patterns in early acral melanoma and acquired acral nevus. Major dermoscopic pattern of early acral melanoma is the parallel ridge pattern (a). The parallel furrow pattern (b), in which parallel pigmented lines are seen along the furrows of the skin markings, the latticelike pattern (c), composed of the parallel lines on the furrows as well as of the lines bridging the parallel lines, resulting in a lattice-like pigmentation, and the fibrillar pattern (d), formed by densely packed fine fibrillar pigmentation arranged in the direction crossing the parallel skin markings, are typical of acral nevi.