Sentinal Node After Axillary Nodectomy

2xBC

Has anyone experiened problems with sentinel node results with breast cancer recurrence? 

First cancer was 10 years ago in right breast and I missed option of sentinel node procedure by 6 months so I had a nodectomy which removed about 14 nodes all were negative.  I had lumpectomy, radiation and CMF chemo. 

Now with new second primary diagnosis in same breast (right) they performed a sentinel node biopsy.  Strange but the sentinal node showed up in my non cancerous breast (left).  You got it, they injected my right breast with dye and node showed up in left breast! Nodes came back negative but now oncologist is saying that they cannot rule out potential positive nodes in right breast lymph system as none of the right nodes were looked at with this most recent diagnosis.

This second primary has been totally frustrating with a strange SN results and a completely different tumor pathology (1st: ER+, PR+ HER2NU - // 2nd: ER-, PR-, HER2NU +).

 Thanks for any thoughts.