the occurrence of osteomalacia in association with neurofibromatosis has been reported too often to be a chance finding。

这种现象的发生经常可在文献里被报道，所以不能作为一种偶然发现。

the occurrence of osteomalacia in association with neurofibromatosis has been reported too often to be a chance finding。

这种现象的发生经常（在文献里）被报道，所以不能作为一种偶然发现。

，

软骨病的发生与神经纤维瘤病的关联已缕有报道而非个案。