Fig. 2

In an 9-year-old female patient recurrence is seen after the RFA. a.) on axial images, b.) on coronal images the lesion located in the cortex of the proximal tibia is seen on CT images. The lesion is peripherally sclerotic and centrally hypodense. the nidus (white arrow) diameter was 4.7 mm, and the periosteal reaction (red arrow) thickness was 4.5 mm, c.) the image is shown first RFA, d.) the image is shown second RFA, after the first ablation. The pain score was 9 before the first ablation, the pain score after RFA was 3 points at the 1st week and 4 points at the 3rd month. The patient was using NSAIDs 7 times a week before the first procedure, she started taking NSAIDs 4 times a week after the first ablation. Our patient was considered to have relapse because the patients’ pain and NSAID use did not improve effectively. A second RFA was performed 6 months after the first ablation. Before the second RFA, the patient had a pain score of 7 and was taking NSAIDs 4 times a week. After the second RFA, the pain score decreased to 0 points in the 1st week and 3rd month. NSAID use was also 0