PMC3919843_01
Clinical view of the cylindroma on the left parietal scalp. [Copyright:  2014 Cohen et al.]
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Physical examination revealed a solitary 6 mm salmon-pink, firm, dome-shaped papule on the left parietal scalp (Figure 1).
Dermatoscopic view shows several scattered white globules and arborizing telangiectasia on a white to salmon pink background. The vascular branches are more pronounced at the periphery and they extend from the periphery towards the center of the lesion. [Copyright:  2014 Cohen et al.]
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Dermatoscopic evaluation showed arborizing telangiectasia and several scattered white globules on a white to salmon pink background (Figure 2).
Well-circumscribed, non-encapsulated nodule in the dermis. There are multiple lobules arranged in a jigsaw-mosaic pattern. [Copyright:  2014 Cohen et al.]
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Histologic evaluation shows multiple irregular lobules in a jigsaw-mosaic pattern diagnostic of cylindroma (Figures 3 and 4).
Each lobule consists of two layers of cells; an outer layer of cells with small hyperchromatic nuclei and an inner section of cells with oval vesicular nuclei. Each lobule is outlined by a dense PAS-positive hyaline membrane. [Copyright:  2014 Cohen et al.]
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Histologic evaluation shows multiple irregular lobules in a jigsaw-mosaic pattern diagnostic of cylindroma (Figures 3 and 4).