A 17-year-old Moroccan boy, without medical history or similar cases in the family, presented with a 3-year history of nonitchy erythemato-pigmented patches, surmounted by follicular papules, on both cheeks, without lesions of keratosis pilaris on the body (Fig 1).

Sarcoidosis is a granulomatous systemic disease of undetermined origin. Its dermatological manifestations are present in 25% of cases and they are very polymorphic. Nail abnormalities are unusual in sarcoidosis and are often an indication of systemic involvement. Dermoscopy of the nail may be very useful in some isolated cases and can guide us to the right diagnosis. We report a rare case of systemic sarcoidosis presenting as nail dystrophy with painful phalanges and underlying bony cysts, treated successfully by oral corticosteroid with good evolution.

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Aims: Solitary nodular calcinosis of Winer is a rare and benign form of localized idiopathic cutaneous calcinosis. Its dermoscopic features may be useful for early diagnosis, but have never been described in the literature to our knowledge. Case Report: A 5-year-old child presented to our clinic with a  2 years history of a painless keratotic  and warty nodule located in the helix of the right ear. A wart was suspected and treated without any improvement. Dermoscopy was performed and showed peripheral white deposits suggestive of Winer's calcinosis, motivating an excision whose histological examination confirmed the diagnosis. Discussion: The subepidermal calcified nodule has been rarely described in the literature. It is not known to be associated with a disorder of phosphocalcium metabolism or other systemic diseases. Pathogenic hypotheses include calcification of preexisting skin structures, mast cell degranulation with secondary calcinosis, or prior trauma. Surgical excision with histopathological confirmation is necessary to show the dermal calcium deposits, which are usually amorphous and granular and may be surrounded by a lymphohistiocytic infiltrate or giant cells. Nevertheless, dermatoscopic evaluation can aid in rendering a timely diagnosis by showing these whitish dermal deposits. Conclusion: The diagnosis of Winer's nodular calcinosis has always been based on histology, but the dermoscopy described here for the first time is so suggestive that it can be used to save time and exclude other differential diagnoses.