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[Hereditary porphyria and acquired porphyria in the child. Five case reports].

Two cases of inherited porphyrinopathies and three cases of acquired porphyrinopathies are described. The two inherited cases were cutaneous porphyrias with 50% reduction of enzyme activities: one case of erythropoietic protoporphyria in a 2 year-old male and one case of familial cutaneous porphyria in a 7 year-old boy. The three cases of acquired porphyrinopathy included one case of lead poisoning in a 3 year-old boy and 2 cases of hereditary tyrosinemia in 1 and 2 year-old infants. Urinary and erythrocytes porphyrins and precursors (5 aminolevulinic acid and porphobilinogen) levels were used for diagnosis and to follow the response to treatment.