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LCIS - Lobular Carcinoma In Situ
Questions about lobular carcinoma in situ.
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AskedPublicly Submitted Question
2/5/2018I was recently diagnosed with LCIS in my RT breast. LT breast was questionable but no LCIS. I will have another mammogram on LT breast in 6 months and on the RT in 1 year. Dr. did not recommend surgery but would like me to start tamoxifen. She said she is more concerned with the left breast than the one with LCIS. Questions: 1. shouldnt both breasts get mammogram every 6 months?. 2. The other issue is I have lupus and am on Plaquenil. 2. Wondering if the two medicines will have negative interaction? and 3. does having lupus increase my chances of breast cancer?
RepliedJHU's Breast Center Reply
2/6/2018First LCIS is not breast cancer. Regarding the frequency of your mammograms, we are not able to provide specific medical advice via the website, however, some patients have a yearly mammogram and a yearly breast MRI on the alternating 6 months. Studies on mice have shown that Plaquenil actually helps prevent Tamoxifen resistance, so taking the two together may be beneficial in the long term. There is some data to suggest that women with lupus experience an increased risk of breast cancer.

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