My brother in law has recently been diagnosed with Lesions on his brain (has lost sight in one eye with lesion pressure on optic nerve) liver, lung and bone. What could this be and is there any chance the lesions could be benign? He is scheduled for a biopsy of his Pelvic bone this Wednesday.
I read your question carefully, and I understand your concern. Unfortunately the most probable nature of those lesions is that of metastatic lesions, a malignant tumor which has already spread to other organs. The chances of them being benign is very slim, I am afraid they are almost certainly malignant, I am sorry to have to say that. I hope things work out for the best.