Efficacy and safety of computed tomography-guided microwave ablation with fine needle-assisted puncture positioning technique for hepatocellular carcinoma

Table 4 Complications of computed tomography-guided microwave ablation

Type of reactions	FNP group, n = 70	CP group, n = 54	χ2	P value
Major complications			0.561	0.454
Bacteremia	1	0
Pneumothorax	1	4
Total	2	4
Minor complications			12.345	< 0.001
Postoperative pain	15	11
Postoperative fever	2	7
Self-limiting pneumothorax	2	1
Self-limiting pleural effusion	3	0
Transient elevation of aminotransferase	18	27
Bleeding at the probe-inserting point	1	2
Total	41	48

CP: Conventional puncture; FNP: Fine needle-assisted puncture positioning.