<prompt> Which ca breast is BLLobularPagets ds.MedullaryNone  <response>: Ans. is a ie. Lobular LCIS lobular Ca in situ occurs bilaterally in 50 to 70 of cases, while DCIS occurs bilaterally in 10 to 20 of cases - SchwartzInvasive lobular Ca is frequently multifocal, multicentric and bilateral - Schwartz 