Clinical Application of CT-Guided Percutaneous Microwave Ablation for the Treatment of Lung Metastasis from Colorectal Cancer

Table 2

Complications of 39 times ablation.

Complication	Rate(%)^a
Pneumothorax	11 (28%)
Mild^b	6 (15%)
Severe^c	5 (13%)
Chest pain	8 (21%)
Fever	2 (5%)
Hemothorax	0
Hemoptysis	0
Pleural effusion	0

Classification consisted of the Common Terminology Criteria for Adverse Events version 4.0 [29]. ^aThe rate was calculated by dividing the times of symptom in parentheses by the total times of ablation (n = 39). ^bGrades 1-2, no chest tube required. ^cGrades 3-4, chest tube required.