osteocele

例句：

1. 1. The patient had a bone tumor removed from his leg.
   这位病人从腿上取出了一个骨肿瘤。
2. 2. Osteocele is a rare condition that affects the growth of bones.
   骨膜瘤是一种罕见的状况，影响骨骼的生长。
3. 3. The doctor diagnosed the patient with a mild form of osteocele.
   医生诊断出患者患有轻度的骨膜瘤。