Search

Background: Both microwave ablation (MWA) and radiofrequency ablation (RFA) are commonly employed local ablation techniques for malignant liver tumors. However, comparative data on long-term results between these two techniques is scarce in the literature. Methods: This is a retrospective comparative study between MWA and RFA for hepatocellular carcinoma (HCC) using surgical approach. Results: The MWA group consisted of 26 patients while the RFA group consisted of 47 case-matched patients. The two groups were comparable, except patients were older and their platelet count was lower in the MWA group. The median follow-up period was 47.5 months in MWA group and 52.9 months in RFA group (p = 0.322). There was no difference in 5-year overall survival (MWA 73.1%, RFA 46.3%, p = 0.082) and 5-year disease free survival (MWA 13.8%, RFA 14.6%, p = 0.736). When a subgroup analysis of tumors ≥ 3.5 cm was performed, there were 16 patients in the MWA group and 21 patients in the RFA group, the 5-year overall and disease-free survival were MWA 75.0%, RFA 28.6% (p = 0.022) and MWA 25.0%, RFA 4.8% (p = 0.207), respectively. Conclusion: MWA is comparable to RFA for HCC in terms of long-term outcomes. For tumors ≥ 3.5 cm, MWA is associated with a better overall 5-year survival.

Foreign body penetration of the stomach is seldom encountered in general surgical practice. Liver abscess as a consequence of such occurrence has only been reported sporadically. We report three cases of liver abscesses due to direct penetration injury of the stomach by ingested foreign bodies. All three patients presented with clinical features of liver abscess without history of foreign body ingestion. All recovered with surgical treatment. Successful management relies on prompt recognition and early intervention as deaths have been reported due to missed or delayed diagnosis. The potential role of a minimally invasive approach in the management of this entity is also discussed.