The use of dermoscopy in diagnostics of a pilonidal cyst ("jeep disease") - case reports.

The differential diagnosis of pinkish, firm nodules is difficult and has been based mainly on the morphology of vessels in dermoscopy. The aim of the study was to present dermoscopic features of two nodular pilonidal cysts in the diagnostic procedure of pink nodular lesions. The cases presented here belong to a rare variety of nodular pilonidal cysts known as the "motorcyclist's" or " jeep driver's nodule". Dermoscopy reveals an irregular, whitish and pink-colored background, with centrally located confluent, whitish streaks extending within the lesion, radial from the center to the periphery. Moreover, multiple, diffused, dotted vessels, arranged peripherally and the small central ulceration have also been observed. Described cases have shown doctors the importance of the utmost vigilance when conducting the dermoscopy of pink nodules, which may suggest amelanocytic melanoma, basal and squamous cell carcinoma, pyogenic granuloma, lymphoma, pseudolymphoma and even the pilonidal cyst.