intraductal papilloma (2 cases), its rotating 3D reconstruction image showing papillary neoplasm in the duct, smoothness in its contour and no infiltration to the duct.

• 2例导管内乳头状瘤旋转三维重建图像见扩张的导管内有乳头状肿物，边缘光滑，导管无浸润。