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

2. 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?

3. 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?

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

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

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

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

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

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

10. 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?