Extension of hepatic necrosis secondary to current arcing to surgical clips: a potential complication of radiofrequency ablation

Cryoablation of lung malignancies recurring close to surgical clips following surgery: Report of three cases

Background:

Minimally ablative therapies are now available for the treatment of lung malignancies. However, selection of the appropriate technique is not always easy and requires accurate preoperative planning.

Aims:

To describe the treatment of lung tumors with cryoablation.

Settings and Design:

We report three cases of lung malignancies that recurred close to surgical clips after surgical treatment, successfully treated by cryoablation.

Materials and Methods:

An initial freezing cycle was performed for 10 min, followed by a 5-min thawing cycle, and an additional 10-min freezing cycle. A final 5-min thaw was necessary to remove the needle from the iceball formed during the freezing cycle.

Results:

The procedures were completed successfully with no signs of surgical-clip misplacement, and excellent ablation of the lesions.

Conclusion:

Cryoablation is a relatively new procedure that potentially permits the local treatment of lung tumors with minimal loss of lung parenchyma.

Simple and reproducible hepatectomy in the mouse using the clip technique

AIM: To investigate the reliability of massive hepatectomy models by using clip techniques.

METHODS: We analyzed anatomical findings in 100 mice following massive hepatectomy induced by liver reduction > 70%. The impact of various factors in the different models was also analyzed, including learning curves, operative time, survival curves, and histopathological findings.

RESULTS: According to anatomical results, models with 75%, 80%, and 90% hepatectomy produced massive hepatectomy. Learning curves and operative times were most optimal with the clip technique. Each hepatectomy performed using the clip technique produced a reasonable survival curve, and there were no differences in histopathological findings between the suture and clip techniques.

CONCLUSION: Massive hepatectomy by the clip technique is simple and can provide reliable and relevant data.