I Was Diagnosed By Stereotactic Biopsy On 8/15/15 For DSIC

I was diagnosed by stereotactic biopsy on 8/15/15 for DSIC and invasive lobular breast cancer and a titanium marker was placed at the time. E+, P+, HER@ and K9 not able to be done due to lack of tissue but have a varience for PALB2 gene. I had a lumpectomy on 10/6/15 which showed nothing, no residual tissue and lymph nodes were clear. Stage 1a. I had 28 rounds of radiation and had my first mammogram done on 2/22/16 which shows the marker still present and a ill defined area. Recommended follow up in 6 months. I am concerned that the correct area was not biopsied