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MELAS (mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episode)
syndrome is a rare but clinicopathologically distinctive mitochondrial disorder. We experienced a
case of MELAS syndrnmp in A 11 year-old girl who showed repeated attacks of stroke-like episodes,
vomitng, cortical blindness, hearing deficit and alternating hemiplegia. Serum lactic acid level was
elevated (6.4 mmol/Z). The diagnosis was confirmed by muscle biopsy which revealed dispersed
ragged-red fibers. |