疏松的

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

单一性疏松瘤，不像外生疣，是一个外耳道少见的病。

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

量氟会引起骼的损伤,其病变复杂,既有硬、周,又有软、质疏松。