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症例は66歳,女性。左腎細胞癌多発肺転移に対し,左腎全摘術を施行。術後インターフェロン(IFN)α,γの併用療法を施行した。4週間の併用投与で転移巣の縮小を認め,以後IFNαの単独療法に切り換えたが,6か月後に肺転移巣はほぼ完全に消失した。本症例においてIFNα,γ併用療法が奏功した要因は,肺転移であったこと,腎摘を施行したことのほか,比較的短期間に集中投与したことなどが考えられ,併用療法は進行性腎癌の治療として有効と思われた。
A 66-year-old woman underwent left nephrectomy for renal cell carcinoma with lung metastasis. After the operation, combined therapy with interferon-α and -γ was performed, and the lung metastases responded well. Interferon-γ was stopped after 4 weeks because of complications, and she received interferon-α only as an outpatient. All lung metastases disappeared within 6 months after the start of treatment. Spontaneous regression of metastases most commonly occurs in the lungs after nephrectomy. Combined therapy with IFN-α and -γ might be effective for inducing regression in these patients.
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