Calcinosis cutis in porphyria cutanea tarda – not always a marker of disease activity

Illustrations

Figure 1 A) Cicatricial scalp alopecia, post-inflammatory hypopigmentation and areas of calcinosis. B) Detailed view of a retroauricular focus of calcinosis, showing nodules with central ulceration and elimination of a whitish material. C) Dermal calcification (HE, 100×). D) Skull X-ray showing various foci of cutaneous calcification.