Figure 3

Breast tumor. (A) The tumor is well encapsulated and atrophic ductal components are on the left. (B) It is composed of two different tumor components and admixed with variable amounts of lymphocytes. (C) Some neoplastic cells arranged in rosettes without lumen in the lymphocyte-poor background. (D) The most neoplastic cells are oval to polygonal or short fusiform with small round-to-oval, pale nuclei and no or inconspicuous nucleoli, set in the lymphocyte-rich background.