RT Journal Article SR Electronic T1 Progressive cerebeilar ataxia, spasticity, psychomotor retardation, and hexosaminidase deficiency in a 10‐year‐old child JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 571 OP 571 DO 10.1212/WNL.27.6.571 VO 27 IS 6 A1 PATRICK M. MACLEOD A1 STEPHEN WOOD A1 JAMES E. JAN A1 DEREK A. APPLEGARTH A1 CLARISSE L. DOLMAN YR 1977 UL http://n.neurology.org/content/27/6/571.abstract AB During the course of investigating a 10-year-old boy because of progressive deterioration of intellectual functioning, ataxia, and hemiplegia, an absence of serum hexosaminidase activity was noted. A skin biopsy examined by electron microscopy showed axonal accumulations of dense osmiophilic deposits. Because of the patient's age at onset and the slowly progressive nature of his illness, we are reporting an atypical juvenile case of Sandhoff disease.