Figure 2.

Histological features of IDP in the left axillary lymph node. Intracystic papillary proliferative lesion at low power, ×20 (A). Two-cell pattern lined by luminal cuboidal cells and a distinct outer layer of myoepithelial cells under higher magnification, ×200 (B). Intraductal papillary proliferative lesion, ×40 (C) and a small cluster of duct-like structures in the lymphoid tissue surrounding intracystic IDP, ×200 (D).