脉络丛起源肿瘤( Choroid plexus tumours CPT )包括:脉络丛乳头状瘤( Choroid plexus papilloma , CPP ) 、非典型性脉络丛乳头状瘤( Atypical choroid plexus papilloma , ACPP )及脉络丛癌( Choroid plexus carcinoma , CPC ) 。CPT的总发病率占所有脑肿瘤的.CPT主要发生在侧脑室( 50% )和四脑室( 40% )的脉络丛, 5%发生于三脑室, 2个或3个脑室同时受累者占5% ......