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. In a phyllodes tumor the breast, what is the usual mitotic rate found in a borderline tumor?10-20 mitoses/10 hpf 5-10 mitoses/10 hpf5-10 mitoses/50 hpf <10 mitoses/10 hpf 10-<20 mitoses/50 hpf 2. All of the following are positive in pseudo-angiomatous stromal hyperplasia EXCEPT:CD31All the answers are positiveCD34ActinVimentin 3. All the following are direct or obligate precursors to breast carcinoma EXCEPT:Sclerosing adenosisRadial scar PapillomaComplex sclerosing lesion 4. The malignant cells and Paget's disease may stain with all of the following EXCEPT:PASCEAEMAHigh molecular weight cytokeratinsER/PR 5. All the following are associated with fibromatosis of the breast EXCEPT:Gardner syndrome TraumaNeurofibromatosis type 1 Pregnancy 6. 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 FibroadenomaLymphomaNone of the answers are correct 7. After fibroadenoma, what is the most common focal mass lesion of the breast?Fibrocystic Disease Sclerosing adenosisDCISPhyllodes tumor Papilloma 8. All the following are true with regards to fibroadenomas EXCEPT:Are differentiated from fibroadenomatoid hyperplasia by the presence of a capsuleMore common in Afro-Caribbean women The most common mass lesion in the breast Most common in women in their 20s-30s 9. 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 #2FibroadenomaInvasive breast cancer LymphomaNone of the answers are correctMedullary carcinoma 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? Breast - Part 1, Question #3None of the answers are correctFibrocystic changesApocrine carcinomaDuctal carcinoma in situ with apocrine change Elongated a lobular units with columnar cell alteration (ELUCA) Loading...