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Revista médica de Chile

Print version ISSN 0034-9887


HERMOSILLA B., Nicolás; TORO, Gonzalo De  and  MOLGO, Montserrat. Porphyria cutanea tarda. Case report. Rev. méd. Chile [online]. 2018, vol.146, n.8, pp.943-946. ISSN 0034-9887.

Porphyria cutanea tarda (PCT) is the most common type of porphyria: it is characterized by blistering lesions, erosions and crusts on the back of the hands, associated with photosensitivity and facial hypertrichosis. It is produced by acquired or hereditary deficiency of the enzyme UROD, fifth enzyme in the chain of production of the Heme group. This causes accumulation of porphyrins in the liver, which are subsequently mobilized to the skin, where lesions are generated by photosensitivity. This deficiency can be exacerbated by multiple causes. We report a 51-year-old female presenting with the characteristic dermal lesions described above, which disappeared when she discontinued her hormone replacement therapy with estradiol and dydrogesterone. Urinary and blood uroporphyrin and hexacarboxyl porphyrins were elevated and plasma ferritin was 479 ng/ml. Hormone replacement therapy was discontinued and phlebotomies were attempted but not tolerated by the patient. The dermic lesions have not relapsed.

Keywords : Estrogens; Porphyrias; Porphyria Cutanea Tarda.

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