Table 4.

Procedure‐related complications

Variables	Before PSM			After PSM
	IRE (n = 36)	RFA (n = 22)	P	IRE (n = 36)	RFA (n = 18)	P
Major complications	2	7		2	7
Seroperitoneum (require drainage)	1	2	.551	1	2	.255
Acute pancreatitis	0	2	.140	0	2	.107
Abdominal infection	1	3	.148	1	3	.103
Minor complications	24	37		24	33
Fever (axillary temperature > 38.5℃)	4	11	.002	4	9	.005
Pain (requiring analgesics)	23	18	.234	23	16	.062
Diarrhea	2	3	.357	2	3	.319
Vomiting	1	4	.063	1	4	.038