Histochemical and Ultrastructural Findings in a Case of Centronuclear Myopathy

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Abstract
A 39 yr old man with centronuclear myopathy is presented. The presence of central nuclei in almost all fibers, the existence of type I fibers only, the histochemical pattern of a negative central zone with a perinuclear halo and a hyperactive rim with oxidative enzymes and the ultrastructural data are discussed in light of the previous literature. The possible relationships with other myopathies are taken into consideration as well as the fact that central nuclei may be a non-specific change in several conditions. Consequently, centronuclear myopathy could turn out to be a syndrome from which different entities can be isolated.

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