Fig. 2
From: The safety and response of CT guided percutaneous cryoablation for lung nodules by 17-gauge needles
Local failure of nodule treated by CA procedure. A patient who was a victim of salivary gland cancer. This patient underwent surgery on the left lower lung (LLL) to remove a metastatic lesion, and subsequently developed a new nodule at LLL. CT images at axial plane shows the nodule before CA procedure (a, marked by white arrow). b shows the pigtail was inserted for drainage (curved arrow) accompanied by adjacent pneumothorax, and the cryoablation needle was punctured through the nodule (white arrow). The ground glass opacity represented outer border of the ablation zone is less than 0.5 cm at medial aspect of the target tumor(white arrow in c). The verdict of local failure was established after the comparison between the CT images at 3months and at 1year-4 month after CA procedure. (d and e, indicated by white arrows)