The following synopsis comes from the website itself.
Go Away Mr. Tumor is based on the famous Chinese comic series created by online cartoonist Xiong Dun, chronicling the darkest hours of her life in a lighter and more amusing way. While fighting a malignant tumor, she wrote what became an explosively popular story and inspired millions of people with her optimism and courage.
Despite the title sounding kind of hokey, this looks like it has the potential to be a fun and quirky comedy but with a bit of seriousness as well. Since this is a simultaneous release with China, there aren’t any reviews of it (at least that I could find in English).