组织病理学检查示肿瘤呈分叶状增生，与表皮相连，主要由向外毛根鞘分化的鳞状上皮组成，周边基底细胞排列成栅栏状。
They were mainly consisted of epithelia differentiated towards cells of the outer root sheath, and the peripheral basal cells of the tumor lobules showed palisading arrangement.
叶状肿瘤肿瘤细胞的组织学起源是导管周围成纤维细胞。
Neoplastic cells of PT are probably derived from periductal fibroblast according to the ultrastructure characters.
是一种分叶状血管病变，由薄壁血窦组成，其内没有正常的神经组织。
Vascular lesion with lobulated, thin sinusoidal vascular channels and no interspersed normal neural tissue.
脊椎硬膜外血管瘤在MRI上表现多样，但共同的特点（不管其组织病理类型）包括分叶状轮廓，T2序列上低信号环，实性的富血供病变。
Spinal epidural hemangiomas can have various MR features, but common features (despite histopathologic type) include lobular contour, a rim of low T2 signal intensity, and solid hypervascularity.
脊椎硬膜外血管瘤在MRI上表现多样，但共同的特点（不管其组织病理类型）包括分叶状轮廓，T2序列上低信号环，实性的富血供病变。
Spinal epidural hemangiomas can have various MR features, but common features (despite histopathologic type) include lobular contour, a rim of low T2 signal intensity, and solid hypervascularity.
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