Lobular Carcinoma in Situ

Lobular Carcinoma In Situ

Lobular carcinoma in situ (LCIS) is a condition caused by unusual cells in the lobules of the breast.

It is usually not considered cancer, but it can indicate an increased risk of future cancer. Unlike Ductal Carcinoma in Situ (DCIS), LCIS is not associated with calcification, and is typically an incidental finding in a biopsy performed for another reason. LCIS only accounts for about 15% of the in situ (ductal or lobular) breast cancers.