Stage 1 Kidney Cancer: The Early Phase

Stage 1 kidney cancer represents the earliest phase of kidney cancer, where the chances for successful treatment are often highest. This article is crafted to provide clear insights into stage 1 kidney cancer, explaining what it means, how it is diagnosed, treated, and what steps patients can take to navigate this diagnosis confidently.

What is Stage 1 Kidney Cancer?

Stage 1 kidney cancer is characterized by a small tumor confined to the kidney. Specifically, the tumor measures 7 centimeters (about 2.75 inches) or smaller and has not spread to nearby tissues, lymph nodes, or distant parts of the body. At this stage, the cancer is localized, offering a favorable outlook for those diagnosed.

Symptoms of Stage 1 Kidney Cancer

In many cases, stage 1 kidney cancer may not show any symptoms, making it difficult to detect without regular health screenings. However, when symptoms do occur, they may include:

  • Blood in the urine (hematuria), which may be visible to the naked eye or detectable only through medical testing
  • Persistent pain on one side of the lower back, not related to an injury
  • A mass or lump in the side or abdomen, though this is less common at this early stage

Diagnosing Stage 1 Kidney Cancer

The diagnosis of stage 1 kidney cancer often results from imaging tests conducted for unrelated health issues, leading to incidental discovery. These tests may include ultrasounds, CT scans, or MRIs, which help visualize the tumor's size and location within the kidney. A biopsy, involving the removal of a small tissue sample from the tumor for examination, can confirm the diagnosis and provide additional details about the cancer's characteristics.

Treatment Options for Stage 1 Kidney Cancer

The primary treatment for stage 1 kidney cancer is surgery, aimed at removing the tumor and potentially curing the cancer. Surgical options include:

  • Partial nephrectomy, where only the tumor and a small portion of surrounding healthy tissue are removed. This procedure is preferred for preserving as much kidney function as possible.
  • Radical nephrectomy, which involves the complete removal of the affected kidney. This option may be considered based on the tumor's size, location, or patient health factors.
  • For patients who cannot undergo surgery due to other health conditions, alternative treatments like cryoablation or radiofrequency ablation, which destroy the tumor without removing it, may be options.

Additionally, active surveillance is becoming an increasingly considered option for managing stage 1 kidney cancer, especially in patients with small tumors or those with significant health concerns making surgery risky. This approach involves closely monitoring the cancer without immediate active treatment, using regular imaging tests to track the tumor's growth. Active surveillance aims to balance the need for treatment with the potential risks of surgery, providing a tailored approach to each patient's unique situation.

Living with Stage 1 Kidney Cancer

Being diagnosed with stage 1 kidney cancer can be unsettling, but the localized nature of the cancer at this stage offers an optimistic outlook. After treatment, ongoing follow-ups with imaging tests are essential to ensure the cancer has not returned and to monitor overall kidney health.


Stage 1 kidney cancer marks the earliest stage of this disease, characterized by a small tumor confined to the kidney. With its localized nature, stage 1 kidney cancer has a high potential for successful treatment, often through surgical methods designed to remove the cancer and preserve kidney function. Understanding this stage, staying vigilant for any symptoms, and undergoing timely and appropriate treatment are crucial steps in managing this condition effectively. Advances in detection and treatment continue to improve the prognosis for individuals with stage 1 kidney cancer, offering hope and a path forward for those affected.


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