<prompt> True about infiltrating lobular breast carcinoma:-Indian file patternAdjacent areas are not calcified .Mostly unilateralDevolps both in male and female breast .  <response>: LCIS originates from the terminal duct lobular units and develops only in the female breastQ. LCIS is mostly multicentric bilateralQ Increased risk of invasive carcinoma is in the both breastsQ. Calcifications associated with LCIS typically occur in adjacent tissues neighborhood calcificationQ Histologic hallmark of invasive lobular carcinoma is tendency of tumor cells to invade in linear strands Indian file pattern. 