10.脈絡叢乳頭狀瘤(choroid plexs papillomas)造成腦室擴大(ventricular enlargement)的原因,不包括下列何者? (A)腫瘤長大(tumor growth) (B)後脈絡叢血管被腫瘤壓迫(posterior choid artery compression by tumor) (C)腦脊髓液過度製造(excessive production of CSF) (D)出血造成蜘蛛膜炎以致減少腦脊髓液吸收(decreased absorption of CSF from hemorrhage-induced arachnoiditis)