Cryoablation

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Cryoablation Minimally-Invasive, Non-Surgical
Treatment for Kidney Cancer
The Johns Hopkins Hospital
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Kidney Cancer

• 52000 new cases per year in the USA
• 75 are incidentally discovered when patients are
  examined for other reasons.
• Because of utilization of Cat scans, Ultrasounds
  and MRIs by Radiologists
• This Incidental detection results in improved
  long term survival/cure rate because many caught
  early- now70 (40 in 1960s)

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Kidney Cancer in the US
52000
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• Treatment options
• Removal of whole kidney
• Removal of tumor and surrounding part of kidney
• Open surgery vs laparoscopic surgery or ablation
• Percutaneous ablation

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Percutaneous Cryoablation

• A thin, needle-like, probe is directed from the
  skin into the tumor
• NO INCISION or SURGERY
• Under direct visualization using a CAT scan or
  Ultrasound
• The probe freezes the tumor to lethal sub-zero
  temperatures
• Probe is thawed and removed
• Under minimal sedation
• NO GENERAL ANESTHESIA

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Size of Kidney Cancers Treated with Cryoablation
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Percent of kidney cancers completely
treated (Success rate)
1-year follow up lt 1-year follow up
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What happens to the Cancer after treatment?
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Before After
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Minimally-Invasive Cryoablation for Kidney Cancer

• Cryoablation can be a curative treatment option
  for patients with kidney cancer
• 4 cm or less-success rate is 97
• Even patients with larger tumors can benefit
  from this procedure especially those who cannot
  have general anesthesia or surgery
• Half of patients go home same day,
• the rest after one nights stay