Conversation: The conversation between human and AI assistant.
[|Human|] I have atypical hyperplasia...it said within 0.2 cm of the lateral margin....is this alot of tissue?  Secondly my post op MRI one year later said it shows mild nonenhancing distortion posterior of my nipple.  I noticed it is very flat now.  What does these two things mean
[|AI|]  Hello! I have read your concerns and will try to answer your questions thoroughly.  I assume you underwent lumpectomy for your tumor.  Atypical hyperplasia is not considered as cancer, so a 0.2 cm margin will suffice.  If it is carcinoma in-situ or invasive carcinoma, the margins should be clear in all dimensions.  In my practice, generally at least 0.5 cm to 1 cm margin is very good.  Your MRI result of a mild nonenhancing distortion posterior of the nipple is from the post-operative site, since a lumpectomy generally gets a chunk of tissues from the breast, hence, distortion of the tissues in that area are normally seen. I hope I alleviated your concerns.  Have a nice day!