The clinical presentation of patients with kidney cancer is complex and variable; some symptoms are a direct result of the kidney tumour itself, while others may be due to hormones secreted by the kidney cancer cells or metastases
Some symptoms are a direct result of the kidney tumour itself, others may be due to hormones secreted by the kidney cancer cells or produced by metastases.
Early stage kidney cancer often has no obvious clinical manifestations and is usually detected by a health check-up or by imaging for other reasons, resulting in an increasing number of cases of limited kidney cancer without any symptoms and a gradual decrease in the number of patients with symptoms or signs of kidney cancer, especially those with the classic triad of haematuria, pain and masses, which have become rare.