text: 显微镜下肿瘤组织由血管和结缔组织形成的乳头样组织被单层柱状上皮覆盖脉络丛乳头状癌（papillomachoroideum）占该肿瘤的10%～20%，呈浸润性生长，组织学上可看到瘤细胞异形性及核分裂象。
entities.entity: 显微镜
entities.label: equ
entities.entity: 肿瘤组织
entities.label: bod
entities.entity: 显微镜下肿瘤组织
entities.label: sym
entities.entity: 血管
entities.label: bod
entities.entity: 结缔组织
entities.label: bod
entities.entity: 组织
entities.label: bod
entities.entity: 上皮
entities.label: bod
entities.entity: 由血管和结缔组织形成的乳头样组织被单层柱状上皮覆盖
entities.label: sym
entities.entity: 脉络丛乳头状癌
entities.label: dis
entities.entity: papillomachoroideum
entities.label: dis
entities.entity: 肿瘤
entities.label: dis
entities.entity: 瘤细胞
entities.label: bod