Published by Valentis Cancer Hospital at 21st August 2025

Two Tumors, Zero Compromise – CyberKnife S7’s Victory Over Bilateral Kidney Cancer

Before Treatment Scan

Mr. Bira Kumar Bhattacharjee, a 70-year-old from Kolkata, faced a life-changing diagnosis of Bilateral Renal Cell Carcinoma. Despite having tumors in both kidneys, advanced treatment at Valentis Cancer Hospital with CyberKnife S7 technology offered a ray of hope. In just a few days, he underwent precise, non-invasive therapy that preserved kidney function and improved his quality of life. Today, he is living cancer-free for over 2 years. 

Patient Details

Age & Gender

70 / male

Condition

Bilateral Renal Cell Carcinoma (Kidney Cancer affecting both kidneys)

Symptoms

Significant weight loss, fatigue over 2 months, incidental tumor detection during routine ultrasound

Treatment Goal

To target and destroy cancerous tissue within the prostate gland using non-surgical precision radiation, while avoiding damage to nearby healthy organs and improving overall quality of life.

Main Challenge

Bilateral tumors pose a unique challenge because traditional surgery could lead to significant loss of kidney function, increasing the risk of lifelong dialysis. A targeted approach was crucial to remove cancer cells without damaging surrounding healthy tissue. 

Treatment Given

The patient was treated with Stereotactic Ablative Body Radiotherapy (SABR) using the CyberKnife S7 system. 

  • Precision Planning: Tumor volumes and nearby critical structures were mapped through advanced imaging. 
  • Radiation Delivery: A single high-dose fraction (27 Gy) was delivered to both kidneys with sub-millimeter accuracy. 
  • Technology Advantage: The CyberKnife S7 tracked tumor movement in real time, ensuring radiation was focused only on the cancer cells. 

Results

  • Tumors were successfully targeted and eradicated. 
  • Kidney function was preserved. 
  • The patient experienced minimal side effects and was discharged within 2 days. 
  • 2 years later, he remains cancer-free with excellent quality of life. 

Conclusion

Mr. Bira's journey is a powerful reminder that advanced technology and expert care can conquer even the most complex cancers. 
Valentis Hai Toh Mumkin Hai — because at Valentis Cancer Hospital, hope meets precision. 

Emergency: 075992 21100

Toll Free Number: 1800 313 6064

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