Cytoreductive Nephrectomy in Metastatic Patients with Signs or Symptoms: Implications for Renal Cell Carcinoma Guidelines

Abstract

The role of cytoreductive nephrectomy (CN) patients with metastatic renal cell carcinoma (mRCC) is unclear. To define the proportion of symptomatic mRCC, to investigate the impact of CN on symptomatic improvement and perioperative morbidity, and to elucidate the trade-off between such benefit and harm, an observational study of 317 mRCC patients treated with CN was performed. Symptomatic mRCC was defined as the presence of any sign or symptom causally related to the disease. Sign or symptom resolution and improvement were defined as the absence of all the signs and symptoms recorded at baseline, and the absence of at least one sign or symptom recorded at baseline, respectively. Perioperative morbidity was assessed using the Clavien-Dindo classification. Response to CN was classified as beneficial, mixed, or harmful according to the trade-off between symptomatic improvement and perioperative morbidity. The proportions of local, metastasis-specific, and general signs or symptoms were 37%, 23%, and 27%, respectively. The proportions of any sign or symptom resolution and improvement after CN were 43% and 71%, respectively. The proportions of local sign or symptom resolution and improvement after CN were 91% and 95%, respectively. The risks of any complication and major complication were 37% and 10%, respectively. At regression analysis, symptomatic status was not associated with perioperative morbidity. The proportion of beneficial response was invariably higher than the proportion of harmful response. At mRCC diagnosis, two out of three patients suffer from any sign or symptom, and one out of three suffers from local signs or symptoms. CN has a positive impact on symptomatic status. PATIENT SUMMARY: Most metastatic renal cell carcinoma patients are symptomatic, and they should be aware that cytoreductive nephrectomy has a positive impact on symptomatic status.

Keywords: Cytoreductive nephrectomy; Guidelines; Kidney cancer; Metastasis; Symptoms; Systemic therapy.