question: My wife 33 years old premenopausal women 171 cm ht,64 kgs weight had left radical mastectomy & left axillary dissection  20 days before ,confirmed on biopsy grade-2 ductal carcinoma & 12/24 lymph nodes with metastatic carcinoma?.week before undergone full body PET CT scan ,impression is no critical disease any where in the body & no metastatis.But our oncologist says 8 cycles of chemotherapy to be done ,radiation therapy to kill microscopic cells which cannot be detected by PET CT.We are worried of chemotherapy but we do not have option.Suggest please