Acoustic neuroma is a noncancerous (benign) and usually slow-growing tumor that develops on the main nerve leading from your inner ear to your brain.
听神经瘤是一种非癌性(良性)并且通常生长缓慢的肿瘤，它发生在从内耳到大脑的主神经上。
2
The kind of tumor in question, a ganglioglioma, is generally considered benign.
这块肿瘤是一节神经节细胞，通常认为是良性的。
3
Over an average of 8.5 years of follow-up, 343 of these men and women were diagnosed with glioma; another 245 were diagnosed with another, usually benign type of brain tumor called meningioma.