3.3 Lobular Carcinoma in Situ
The term：Terminal ducts and acinus from the lobulesand mainly involving the lobules.The cancer cells are confined to the vesicles and do not penetrate the basement membrane.The lobular structure still exists.
Clinical manifestation：
●Can have no clinical symptoms
●No abnormal changes in nipples，only changes similar to hyperplasia
●Multi-center and bilateral incidence are more common
Population distribution characteristics
●Pre-menopausal women with an average age of 49 are more common
Mammography：(https://www.daowen.com)
●Cluster polymorphic calcification
●Often combined with asymmetry，structural distortion
MR：
●Non-tumor-like reinforcement，focal，linear or regional distribution
●Irregular strengthening of the mass
●Outflow curve
Image inspection recommendation：
●Best image inspection method：Mammography