A
 Myosin ATPase, pH 9.4 |
What is the differential diagnosis in adults (Left)? In children (Right)? |
B ATPase, pH 9.4 |
All the muscle fibers in this biopsy are type I. What is the differential diagnosis? |
C
 ATPase pH 9.4 stain |
What is the fiber type abnormality? What is the differential diagnosis? |
D Myosin ATPase, pH 9.4 stain |
What is wrong with the pattern of ATPase staining? What are likely clinical features in this patient? |
E ATPase pH 9.4 stain |
Describe the pattern of ATPase staining of muscle fibers. What does this pattern of ATPase staining suggest about the disease course? |