Spontaneous regression of a pulmonary metastasis after nephrectomy for renal cell carcinoma

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Abstract
Regressions of metastases following nephrectomy for renal cell carcinoma are rare. Most reported cases have involved pulmonary metastases. Hormonal and immunological mechanisms have been postulated. A case is described of a pulmonary metastasis which regressed after nephrectomy and which failed to recur despite the later appearance of new sites of pulmonary metastases. The literature is reviewed.