疏松的

Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单一性疏松骨瘤，生骨疣，是一个耳道少见的病灶。

But overdose fluorine can cause skeletal damage, which lesion fairly complicated.There are only osteosclerosis, ossifying around the bone, but osteomalacia, osteoporosis.

但过量氟会引起骨骼的损伤,其病变复杂,既有骨硬化、骨周化骨,又有骨软化、骨质疏松。