岩瘤（boss） 侵入体产状之一,在岩株顶部见有瘤状的突起,大小与岩株相近,但出露面积较小,且在平面上近于圆形,接触面陡立。
铌、稀土成矿作用与脉状、瘤状碳酸岩有关。
The niobium rare earth mineralization was concerned with tumour carbonatite.
目的探讨岩骨后脑膜瘤的分型及手术治疗效果。
Objective To discuss the classification and the surgical outcome of posterior petrosal meningiomas.
三叉神经瘤表现为特征性哑铃形伴岩骨尖骨质破坏。
The characteristic trigeminoma appeared as dumb bell with erosion of petrous bone.
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