You mentioned that there ought to be a Scene 5 in my script, but I'm not too sure how it should end.

- I could change the entire ending to the patient receiving chemotherapy and having a new liquid colour (possibly yellow as that is the colour of methotrexate) flushing out and/or destroying the roaming cancer cells and keeping the tumours at bay

- The ending could stay the same as it is but either the narrator or on-screen text issues a kind of warning that cancer can strike at any age (or something to that effect), kind of like an advert

At the moment I prefer the idea of the advert, but if you can think of a better way to end it, please let me know