I am caring for a friend recently diagnosed with stage 4 cancer of the oesophagus. We saw the oncologist today who explained that she would have 3 week cycles and 4 rounds. That to me means 12 weeks. However my friend thinks one round is made up of 3 cycles 3x3 x4 and has calculated 9 months of treatment. We will of course clarify but could you shed some light on how cycles and rounds work?