1. In a phyllodes tumor the breast, what is the usual mitotic rate found in a borderline tumor?

2. After fibroadenoma, what is the most common focal mass lesion of the breast?

3. Multiple masses are noted in the breast of a 40-year-old female. To reassure the patient, an excision was performed and a representative image of the histology is shown. Based on these findings, what is the best diagnosis?

4. All of the following are positive in pseudo-angiomatous stromal hyperplasia EXCEPT:

5. During pregnancy a 36-year-old female noted an enlarging breast mass 4 cm in greatest dimension. A FNA was performed and representative cytologic images are shown. Based on these findings, what is the best diagnosis?

6. The malignant cells and Paget's disease may stain with all of the following EXCEPT:

7. An irregular breast mass was found on self examination by a 46-year-old female. A FNA was performed and representative images are shown for this case, which highlight cells with atypical cytology that are discohesive and in a clean background. What is the best diagnosis?

8. All the following are direct or obligate precursors to breast carcinoma EXCEPT:

9. All the following are associated with fibromatosis of the breast EXCEPT:

10. All the following are true with regards to fibroadenomas EXCEPT: