[Percutaneous renal cyst puncture with CO2 instillation therapy]

Area of Science:

• Nephrology
• Minimally Invasive Surgery
• Medical Imaging

Background:

• Renal cysts are common, often benign, but can cause discomfort or complications.
• Traditional treatments may involve surgery or observation, with varying outcomes.
• Percutaneous aspiration is a less invasive option, but cysts can recur.

Observation:

• Ultrasound-guided percutaneous puncture and CO2 (carbon dioxide) instillation were performed on 9 renal cysts in 6 patients.
• A 5.5 Fr one-step fluid drain kit was used for puncture and aspiration under ultrasonography.
• A mean of 115 ml of cyst fluid was aspirated and a mean of 73 ml of CO2 was instilled.

Findings:

• CT scans at one month showed a mean cyst volume reduction of 69% (range 46-84%).
• All patients experienced improvement in lumbago, their primary complaint.
• No complications were observed during or after the CO2 instillation procedure.

Implications:

• CO2 instillation appears to be a safe and effective method for reducing benign renal cyst volume.
• This technique offers a promising minimally invasive treatment option for symptomatic renal cysts.
• Further long-term follow-up studies are warranted to confirm the durability and efficacy of this therapy.