Lung Cancer Prognosis More Condition_symptoms Breast Cancer Metastisized To Left Lung. Small Nodule Only. Will Start Chemo Soon. Prognosis?

Breast Cancer metastisized to left lung. Small nodule only. Will start chemo soon. Prognosis? - lung cancer prognosis more condition_symptoms

My SIS has had breast cancer before the age of 15. Only the left lung metastases. Only a small nodule. Soon he will begin chemotherapy. What are your chances of survival, now it is in the lungs, although small? Prognosis?