progressive myosclerosis

例句：

1. 1.This patient has been suffering from progressive muscular sclerosis for many years.
   这位患者已经患有多年进展性肌硬化症。
2. 2.The diagnosis of progressive muscular sclerosis is often challenging.
   诊断进展性肌硬化症往往具有挑战性。
3. 3. Treatment options for progressive muscular sclerosis are limited.
   进展性肌硬化症的治疗选择有限。