Renal cell carcinoma (RCC), a common type of kidney cancer, poses a unique challenge due to its tendency for late recurrence—sometimes occurring more than five years after surgery. A new study from Chiba University Hospital explores the difficulty of predicting these late recurrences and why some patients stop attending follow-up appointments.
Researchers analyzed data from 1,051 RCC patients treated between 1988 and 2021, using machine learning to identify patterns in recurrence and loss to follow-up (LF). While the model accurately predicted recurrences within the first five years, its accuracy dropped significantly for late recurrences, highlighting the unpredictable nature of RCC after this point. No clear risk factors emerged for recurrence beyond five years, leaving oncologists with little guidance on who might need closer monitoring in the long term.
For LF, the study found that older patients, especially those over 70, were more likely to stop follow-up visits. This points to a need for better support systems, particularly for elderly patients who may face barriers to continued care.