PMC10072335_01
Showed cyanosis of the hands, fingers and lips(A-C). Also, it showed dark brown color blood (D). These finding are common manifestation of congenital methemoglobinemia.
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Cyanosis was noticeable on the hands, toes, and lips (Figure 1A). When the blood sample was obtained, it was noticed that the color of the blood was dark brown (Figure 1D).
Autosomal recessive pedigrees tend to show fewer affected individuals and are often described as "skipping" generations. Thus, the primary feature distinguishing autosomal recessive from dominantly inherited traits is that unaffected individuals can have affected offspring, as seen by the red-colored affected children, from carrier parents from the second generation.
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