calcified epithelioma

例句：

1. 1. The patient'sbone was calcified and difficult toremove.
   患者的骨头已经钙化，难以移除。
2. 2. The cartilage in the kneejoint is calcified and can causepain.
   膝盖关节中的软骨是钙化的，可能会导致疼痛。
3. 3. The heart valves arecalcified and can lead to heartfailure.
   心脏瓣膜是钙化的，可能导致心脏病发作。