Figure 4. Patterns of dermatofibroma. A, Peripheral homogeneous pigmentation and central white scarlike patch (pattern 8). B, Peripheral homogeneous pigmentation and central white network (pattern 9). This lesion also shows dotted vessels and erythema. In this case, the diagnosis of Spitz nevus or melanoma cannot be definitively ruled out and biopsy is mandatory. The histopathologic examination revealed a dermatofibroma. C, Atypical pattern (pattern 10). In this lesion, atypical pigment network (on the left), irregularly distributed delicate pigment network, homogeneous areas (pinkish on the left and yellowish in the upper part), scales, and dotted vessels can be observed. The histopathologic examination revealed a dermatofibroma. D. Atypical pattern (pattern 10). A multicomponent pattern with atypical pigment network located on the right, erythema with dotted vessels located on the left, and a central bluish homogeneous area with white structures can be observed in this aneurysmatic dermatofibroma, which was also confirmed by histopathologic examination. (DermLite Foto; 3Gen LLC, Dana Point, California [original magnification x10 for all].)