Biopsy report. Invasion not seen. "

Hi after complete breast removal surgery we got biopsy test report as bellow. Could you please tell do we need treatment for this. Is that harmful. Do we need to take any further treatment like chemotherapy or Harmon therapy. "IMPRESSION: No residual tumor noted, shows prior surgery related changes. All margins are free of tumor. Total 18 lymph nodes dissected, all are free of tumor (0/18). Kindly correlate with prior biopsy report for size and grade of tumor." Here is the OLD biopsy test report of lump "NATURE OF SPECIMEN: Block review GROSS: Received already grossed specimen in multiple bits larger measuring 5.5 x 5 x 2 cm Cut section is solid Grey white with hemorrhagic areas. Tumor is more than 5.0 cm. Representative sections taken. MICROSCOPIC EXAMINATION & IMPRESSION: Infiltrating duct carcinoma High nuclear grade. NRBM 3+2+3-8. Grade 3. Lymphovascular emboli and perineural invasion not seen."