Biotinidase deficiency (BD) is an inborn error of metabolism in which some genetic variants correlate with the level of enzyme activity. Biotinidase activity, however, may be artifactually low due to enzyme lability, premature birth, and jaundice; this hinders both phenotypic classification and the decision to implement therapy. This study sought to… (More)
The cases of four patients with intermittent claudication due to compression of the cauda equina are reported. The cause of this syndrome is considered to be a compression of the cauda equina by a thickening of the ligamentum flavum. The clinical, neuro-radiological and surgical characteristics are discussed.