expansion scab

例句：

1. 1. expansion scar, 2.hypertrophic scar, 3. hypertrophic ulcer例句：1. The patient developed an expansion scar on his chest after surgery.
   这名患者在手术后胸部出现了一个膨胀瘤。
2. 2.The patient had a hypertrophic scar on his arm due to an old injury.
   这名患者手臂上有一块由于旧伤形成的肥大性瘢痕。
3. 3. The patient's hypertrophic ulcer was causing significant pain and discomfort.
   患者的肥大性溃疡引起了严重的疼痛和不适。