卵巣癌肺転移に対するラジオ波焼灼療法による気胸後に発症した膿胸

Radiofrequency Ablation for Pulmonary Metastasis of Ovarian Cancer Caused Iatrogenic Pneumothorax, Leading to Empyema

ラジオ波焼灼療法（RFA）は肺悪性腫瘍に対する治療選択肢の一つであり，その有効性が報告されてきたが，合併症として気胸の頻度が高いことが指摘されている．われわれは，転移性肺腫瘍に対するRFAにより気胸を発症し膿胸にいたった症例を経験したので報告する．

A female patient in her 40s who underwent surgery for recurrent right lung metastasis from resected ovarian cancer was referred to our department because of the right pneumothorax due to radiofrequency ablation for multiple lung metastases. Methicillin-resistant Staphylococcus epidermidis （MRSE） was detected from the tip of the drainage catheter indicated persistent pulmonary fistula with right empyema, and surgical treatment was performed. A white coat of the whole lung surface and air leakage were observed at radiofrequency ablation （RFA） treated lesion and partial resection of the right lung, debridement, and irrigation were performed. A pathological examination revealed residual viable ovarian cancer cells and pleural fistula.