Recent Question

(M1.BC.0) A 1-year-old Israeli child is brought to the pediatrician by his parents because they noticed that the child can no longer sit up, hold his head up, or recognize them anymore. The child's height and weight are in the 25th percentile for his age. On physical exam, the pediatrician notes the child has hepatosplenomegaly and the following is seen on ophthalmoscopic exam (Figure A). A bone marrow biopsy was performed, and the results shown in Figure B. Which of the following is deficient in this male child? Topic Review Topic
FIGURES:   A   B        

1. Iduronate sulfatase
2. Alpha-L-iduronidase
3. Arylsulftase A
4. Sphingomyelinase
5. Hexosaminidase A

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