Krabbe's disease

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Abstract
Ultrastructural studies of brain and sural nerve biopsy specimens from a patient with Krabbe's disease disclosed periodically constricted or twisted tubules in addition to the more abundant and characteristic crystalloid and prismatic structures within macrophages. It is suggested that the twisted tubules may result from the intracellular accumulation of lactosyl ceramide. Familiarity with these unusual tubular structures is of practical as well as theoretical importance since they may be encountered in brain and peripheral nerve biopsy specimens obtained for the morphological diagnosis of Krabbe's disease.