text: my granmother just found out she has lung and spinal cancer, how long can you usually live with it? she found out two months ago lung cancer is very serious,they usually don't last that long,maybe 6 months.but it also depends on if it a fast growing cancer.as for her spin,it sounds like it has spread.i am so sorry to hear this,i pray that god give you strength.and in god's timing she will go.but also if your grandmother has a fighting spirit and a great will to live,that does keep people around longer.