<s>[INST] My sister had a mastectomy after being diagnosed with breast cancer, now she has had a reccurence, but where her scar is she has got a crustation growing which has started to weep and it is smelly. Why is this happenning and will it heal? Regards Linda [/INST] The crustation and weeping in a recurrent breast cancer indicates a tumor which has fungated. It will only heal with treatment for cancer (chemotherapy or radiation therapy).Please consult with your oncologist. </s>