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What does my mother’s mastectomy indicate?

Q: My 50 years old mother is a breast cancer patient. A lump was identified in her breast about nine months back. Then first she went through 8 cycles of chemotherapy (no biopsy before chemo, only mammogram and FNAC was done) and clinician termed it as T4dN1M0. About a week back, she underwent mastectomy and clinician sent mastectomy specimen for biopsy. The report diagnosed breast cancer - received a mastectomy specimen measuring 18 x 16 x 6 cm with axillary tail measuring 14 x 5 x 2 cm and the overlying skin measuring 15 x 8 cm. On serial slicing, a tumour is seen in the upper out quadrant measuring 3 x 3 cm extending 2 cm away from the DRP and far away from the nipple and areola. The skin is unremarkable. Adjacent breast, on serial slicing, doesn't reveal any other tumour. 10 lymphnodes identified. Section studied from breast shows areas of necrosed tumour cells with focal multinucleated giant cell reaction is seen, however there are no viable tumour cells identified. There are areas of dense sclerosis with chronic inflammatory infiltrate with multinucleate giant cells and focal area of lymphoid aggregate with areas of fat necrosis identified. Deep resection plane is free of tumour. Nipple areola and overlying skin are unremarkable. What does it mean?

A:Initially your surgeon/cancer doctor made a diagnosis of a large tumor involving the skin or chest (T4) wall for your mother. I am sure the doctor, did scans to make sure that the cancer has not gone anywhere else (metastatic). In a patient with locally advanced cancer, involving skin or chest wall, the right treatment is chemotherapy before surgery. Before doing the chemo we usually do a core biopsy to do Estrogen and progesterone (ER/PR) receptor and Her-2 neu testing. Those tests are extremely important in the treatment of breast cancer. I did not see that in your report. But I am sure they did that. After chemotherapy, she had a surgery and now the tumor is very small (about 3 cm). It has many other changes consistent with chemotherapy effect. So your mother's cancer cells were appropriately destroyed by the chemotherapy. That is clearly seen in the pathology (necrosis, inflammatory cells etc). The report did not mention, if it is infiltrating ductal or explain if the lymph nodes were involved with cancer. As per the international standards, the pathology report should include a staging by the pathologist. But I think it could be pT2N0 (before your mother had T4N1). So it is an excellent outcome. Your doctors treated your mother appropriately. Now she needs radiation therapy (because of large initial tumor) and depending upon the ER/PR, she needs anti- estrogen pills. Depending upon the her-2 neu status, she can benefit from trastuzumab. You can take my recommendation to your doctor and ask them these questions. I am sure your mother will do fine. She is in good hands.


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