Abstract
Three inborn errors of galactose metabolism are known. Galactokinase deficiency is the most insidious, since it results in the formation of nuclear cataracts without provoking symptoms of intolerance. Galactose-1-phosphate uridyltransferase deficiency exists in two forms. The complete or near-complete deficiency is life-threatening and affects not only the eye lens but also liver, kidney and brain. Partial deficiency is usually, if not always, benign. Uridine diphosphate (UDP)-galactose 4′-epimerase deficiency also exists in two forms. The very rare profound deficiency clinically resembles classical galactosemia. The more frequent partial deficiency is benign. Review articles are recommended for detailed information [1–3]. Fanconi-Bickel syndrome (Chap. 6) and portosystemic venous shunting are congenital errors of galactose transport leading to hypergalactosemia.
“Whenever you consider a galactose disorder, stop milk feeding first and only then seek a diagnosis!”
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Gitzelmann, R. (2000). Disorders of Galactose Metabolism. In: Fernandes, J., Saudubray, JM., Van den Berghe, G. (eds) Inborn Metabolic Diseases. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04285-4_7
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DOI: https://doi.org/10.1007/978-3-662-04285-4_7
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