Search for: [Abstract = "A 10\-year\-old patient with suspected myopathy was examined. Left quadriceps biopsy was performed. Electronmicroscopy analysis reveald mostly preserved myofibrils structure and unchanged sarcomeres but some parts of the specimen abnormal sarcomere pattern was observed. Unchanged, located submembranously nuclei were seen and mitochondria characterized by bright matrix and devoid of mitochondrial cristae were observed. Characteristic inclusions were present in the muscle fibers."]