PathMD Quizes, Breast Breast – 01 October 29, 2017 peferguson Make sure to subscribe to PathMD to stay up to date with new content and features!! 1. All of the following are positive in pseudo-angiomatous stromal hyperplasia EXCEPT:CD31All the answers are positiveActinVimentinCD34 2. In a phyllodes tumor the breast, what is the usual mitotic rate found in a borderline tumor?10-<20 mitoses/50 hpf 5-10 mitoses/10 hpf5-10 mitoses/50 hpf <10 mitoses/10 hpf 10-20 mitoses/10 hpf 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? Breast - Part 1, Question #3Fibrocystic changesNone of the answers are correctDuctal carcinoma in situ with apocrine change Apocrine carcinomaElongated a lobular units with columnar cell alteration (ELUCA) 4. All the following are direct or obligate precursors to breast carcinoma EXCEPT:PapillomaRadial scar Complex sclerosing lesionSclerosing adenosis 5. The malignant cells and Paget's disease may stain with all of the following EXCEPT:PASEMAER/PRCEAHigh molecular weight cytokeratins 6. All the following are associated with fibromatosis of the breast EXCEPT:PregnancyNeurofibromatosis type 1 Gardner syndrome Trauma 7. After fibroadenoma, what is the most common focal mass lesion of the breast?Phyllodes tumor PapillomaDCISFibrocystic Disease Sclerosing adenosis 8. 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? Breast - Part 1, Question #1 Breast - Part 1, Question #1 Breast - Part 1, Question #1Invasive breast cancer Medullary carcinoma None of the answers are correctLymphomaFibroadenoma 9. All the following are true with regards to fibroadenomas EXCEPT:The most common mass lesion in the breast Most common in women in their 20s-30s Are differentiated from fibroadenomatoid hyperplasia by the presence of a capsuleMore common in Afro-Caribbean women 10. 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? Breast - Part 1, Question #2 Breast - Part 1, Question #2Invasive breast cancer Medullary carcinoma None of the answers are correctFibroadenomaLymphoma Loading...