My mother underwent lumpectomy breast surgery. As per biosphy report, size of tumour is 3 cm x 2.5 cm x 0.8 cm and type of breast cancer is Invasive Ductal Carcinoma, left breast (pT2pN0pMx), Nottingham Grade 2. All the thirteen lymph nodes were free of tumour. ER, Pr report is positive and HEr 2neu is 3 positive. What does this means and here chance of cure. Whether chemotherapy is required and how much does it cost. Kindly guide me.