Bednar tumor is a rare pigmented type of the dermatofibrosarcoma protuberans characterized histologically by the coexistence of two distinct cell populations, including spindle-shaped cells and melanin-containing dendritic cells. We report dermoscopic features of Bednar tumor observed in a 54-year-old female patient. The dermoscopy of Bednar tumor revealed a multicomponent pattern composed of a homogeneous blue-gray pigmentation with shiny white lines, structureless light-brown pigmented areas and a peripheral pigment network. The dermoscopic features observed in the present case are consistent with reported dermoscopic descriptions of Bednar tumor. Although dermoscopy may be suggestive of the diagnosis of Bednar tumor, pathohistological examination remains a gold standard for diagnosis.

Combined nevi are melanocytic lesions composed of two or more distinct types of melanocytic populations within the same lesion. Different types of combined nevi may form bizarrely shaped, multicolored skin lesions, making them one of the greatest melanoma mimickers. We report a 48-year-old female patient with suspicious skin lesion in the left lumbar region. Clinically, there was an oval, slightly asymmetrical lesion measuring 6 x 4 mm, showing multiple colors and shades of brown and black. A dermoscopic examination revealed a brown-bluish coloration in the right part of the lesion, while a fine pigment network with perifollicular halo was found in the left part of the lesion, suggesting the diagnosis of a combined nevus. Histological examination showed a poorly circumscribed proliferation of dendritic melanocytes in the superficial and deep dermis and proliferation of melanocytes in the dermoepidermal junction. A surgical excision of the tumor was performed, in order to confirm the dermoscopic findings. In conclusion, dermoscopy is useful in differentiating combined nevi from other melanocytic lesions.

The balloon cell nevus is a rare and unusual benign melanocytic lesion characterized histologically by complete or predominant presence of balloon-cell transformed melanocytes. They represent approximately 1.7% of all melanocytic nevi. Three female patients, aged 30, 14 and 7 years, with lesions located on the back and head are included in the presented report. The dermoscopic examination revealed the repetitive dermoscopic features in all three patients: white and yellowish aggregated globules. In conclusion, balloon cell nevi are clinically indistinguishable from the common nevi. Dermoscopy can be useful in their recognition since balloon cell nevi exhibit some distinct dermoscopic features in a form of aggregated white and/or yellow globules.