Cryotherapy of liver tumours--a practical guide

Area of Science:

• Hepatobiliary surgery
• Surgical oncology
• Minimally invasive procedures

Background:

• Cryotherapy is a recognized therapeutic option for unresectable liver tumors.
• Intra-operative ultrasound significantly improves the precision of cryotherapy by enabling visualization of hepatic lesions and the freezing process.
• Effective cryotherapy requires careful tumor margin assessment to ensure complete inclusion of the tumor mass within the cryolesion.

Purpose of the Study:

• To provide a practical guide for surgeons performing cryotherapy on liver tumors.
• To outline essential considerations for patient selection and anesthesia.
• To detail the management of potential intra-operative complications, specifically hepatic parenchyma cracking and hemorrhage during iceball thawing.

Main Methods:

• Utilizing intra-operative ultrasound for precise identification and visualization of liver tumors during cryotherapy.
• Implementing careful patient selection and appropriate anesthetic management.
• Employing techniques to manage intra-operative hemorrhage resulting from hepatic parenchyma cracking post-thaw.

Main Results:

• Cryotherapy, guided by intra-operative ultrasound, allows for accurate targeting and ablation of liver tumors.
• Successful management of complications, such as intra-operative hemorrhage, is crucial for patient safety.
• Post-treatment follow-up involving tumor marker assays and liver imaging is essential for monitoring treatment efficacy.

Conclusions:

• Cryotherapy is a viable treatment for unresectable liver tumors, with intra-operative ultrasound enhancing its effectiveness.
• Surgeons must be prepared for potential complications, including hemorrhage, and manage them effectively.
• Repeat cryotherapy is a feasible option for selected patients based on follow-up assessments.