Amanda R., Breast Cancer (Ductal Carcinoma In Situ or DCIS) and Osteosarcoma, TP53 (Li-Fraumeni Syndrome) Symptoms: breast cancer: breast lump, nipple discharge, nipple sore and chafing; osteosarcoma: jaw pain, swollen cheek Treatments: breast cancer: surgery (double mastectomy), chemotherapy; osteosarcoma: chemotherapy, surgery (maxillectomy: jaw surgery with skin graft and prosthetic plate)