结果（1）斜坡破坏31例，6例在桥脑前池形成肿块。
Results (1) 31 cases showed clivus involvement, 6 of which had mass in prepontile cistern.
当这些细胞开始不受控制地分化，形成肿块或肿瘤时，问题就来了。
The problem arises when these cells start to divide uncontrollably, and form lumps or growths.
翼状胬肉是一种高出表面的，表浅的，外在的眼部肿块，其形成于角巩缘处的结膜，并延伸至角膜表面。
A pterygium is an elevated, superficial, external ocular mass that forms over the perilimbal conjunctiva and extends onto the corneal surface.
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