Gastrointestinal Complications of Mitochondrial Encephalomyopathy, Lactic Acidosis and Stroke-Like Episodes (MELAS) Syndrome Managed By Parenteral Nutrition.

ABSTRACT

MELAS - an acronym for mitochondrial encephalomyopathy, lactic acidosis and stroke-like episodes - is a multiorgan disease caused by a mutation in mitochondrial DNA (mtDNA). Its clinical manifestations are highly variable; mainly stroke-like episodes, seizures, recurrent headaches, or muscle weakness. However, gastrointestinal complications such as chronic intestinal pseudo-obstruction (IPO), pancreatitis, gastroparesis and hepatopathy are also common. In this report we describe a young patient with gastrointestinal complication of MELAS which led to superior mesenteric artery syndrome (SMAS). It is rare but not surprising combination and should be considered in cases with significant weight loss and resistance to symptomatic treatment. The optimal energy support is the main pillar of the treatment. LEARNING POINTS Gastrointestinal complications of MELAS such as chronic intestinal pseudo-obstruction, pancreatitis and gastroparesis can lead to undernutrition.Superior mesenteric artery syndrome is a rare condition but should be considered in cases with significant weight loss and resistance to symptomatic treatment.Optimal caloric intake and energy support can improve the condition of patients with MELAS.