Intestinal involvement in metachromatic leukodystrophy.

Metachromatic leukodystrophy is a lysosomal storage disease caused by the deficiency of the enzyme arylsulfatase A. If arylsulfatase A is deficient, sulfatide accumulates. Functionally, this accumulation results in progressive neurological deterioration. The reports about the extra nervous system manifestations of metachromatic leukodystrophy are related to the gallbladder involvement such as polyposis. Unexplained vomiting began in a 5½-year-old girl with late infantile metachromatic leukodystrophy. Endoscopy showed multiple polypoid masses in the pylor of the stomach and duodenum. Severe gastrointestinal bleedings occurred during nasogastric feeding. Intestinal intussusception developed later. To the authors' knowledge, intestinal polypoid masses and obstruction with metachromatic leukodystrophy have not previously been reported. The persistent vomiting may be a symptom of intestinal obstruction due to intestinal polypoid masses with metachromatic leukodystrophy. There may be a trend for the development of polypoid masses in intestine as well as in the gallbladder in metachromatic leukodystrophy.