A 58-year-old man with a history of alcoholism complained of increased skin fragility and skin lesion formation on his hands, forehead, neck, and ears on exposure to the sun. on physical examination, hyperpigmentation and hypertrichosis were observe
d. laboratory testing of a 24-hour urine specimen showed increased uroporphyrin, heptacarboxyl porphyrin, and a slight increase in coproporphyrin; testing for ala and pbg was negativ
e. isocoproporphyrin was elevated in the feces. serum ferritin and serum transaminase were increase
d.