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What disease is seen in children younger than 5 years of age and is characterized by x-linked recessive cardiac myopathies, calf pseudohypertrophy, lordosis, protuberant belly, an increase then a decreas in cpk, and death commonly in the second decade of life?

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1. What disease is seen in children younger than 5 years of age and is characterized by x-linked recessive cardiac myopathies, calf pseudohypertrophy, lordosis, protuberant belly, an increase then a decreas in cpk, and death commonly in the second decade of life?





 
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