progressive spinal muscular atrophy infant type

例句：

1. 1. The child's condition was diagnosed as infantile form of progressive muscular dystrophy.
   这个孩子的病情被诊断为进展性肌肉营养不良症的婴儿型。
2. 2. This rare disease is characterized by progressive muscle weakness and atrophy.
   这种罕见的疾病以肌肉逐渐衰弱和萎缩为特征。
3. 3. Treatment for this condition involves early intervention to prevent further muscle loss.
   这种疾病的治疗需要早期干预，以防止进一步的肌肉损失。