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Presented by Hind Nassar, M.D. and prepared by Aatur Singhi, M.D., Ph.D.
Case 1: 59 year old woman with a breast mass.
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Question 1 of 1
1. Question
Week 414: Case 1
59 year old woman with a breast mass.images/1alex/110209case1image1.jpg
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images/1alex/110209case1image4.jpgCorrect
Answer: Adenoid cystic carcinoma
Histology: none provided
Discussion: Adenoid cystic carcinoma (ACC) can rarely occur in the breast. Unlike its extra-mammary counterpart, ACC in the breast has a good prognosis. Lymph node metastases and distant metastases are rare; metastases mostly occur in the lung. 90% of ACC in the breast are hormone receptor negative and negative for Her-2. The tumor is positive for p63 and negative for actin or smooth muscle myosin. It is also positive for C-Kit.
Incorrect
Answer: Adenoid cystic carcinoma
Histology: none provided
Discussion: Adenoid cystic carcinoma (ACC) can rarely occur in the breast. Unlike its extra-mammary counterpart, ACC in the breast has a good prognosis. Lymph node metastases and distant metastases are rare; metastases mostly occur in the lung. 90% of ACC in the breast are hormone receptor negative and negative for Her-2. The tumor is positive for p63 and negative for actin or smooth muscle myosin. It is also positive for C-Kit.
