sophie kinsella revealing her battle with an aggressive form of brain cancer.or sophie kinsella sharing a deeply personal story of her own. the diagnosis of brain cancer. the 54-year-old writer of the "shopaholic" book series posting on instagram, "at the end of 2022 i was diagnosed with glioblastoma, a form of aggressive brain cancer. i did not share this before because i wanted to make sure my children were able to hear and process the news in privacy." >> it grows very quickly. even with treatments, most people will have a recurrence of their tumor, and the median survival is about 15 months from the time of diagnosis. >> while it's rare, affecting fewer than 50,000 people, glioblastoma is the most common brain tumor in adults. while it can develop at any time of life, 70% of cases occur in people ages 45-70. >> what is so scary about glioblastoma is that it can happen to absolutely anyone, and most of the time we don't know why it's happened. >> kinsella's laugh-out-loud romances and relatable leading ladies defining the romantic comedy movement. >> decline