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Radical versus partial nephrectomy Effect on overall and noncancer mortality
Laurent Zini, MD et.al. , Early View (Articles online in advance of print) Published Online: 4 Feb 2009, Cancer
非癌関連死亡(Non-cancer related mortality)と、癌関連死亡(Renal cell carcinoma-specific mortality)で分けた解析もなされています。非癌関連死亡は5年後は部分切除で12.4%、全摘出で15.6%。10年後は部分切除で27.1% 、全摘出で30.6%(数字は癌関連死亡率で調整後)。有意差はもちろんあり(P = .001) 。癌関連死亡については、有意差についての記述はありませんでした。多分、有意差なしなのだろうと思います。結論として、著者らは
>Relative to PN, RN predisposes to an increase in overall mortality and non-cancer-related death rate in patients with T1a RCC. In consequence, PN should be attempted whenever technically feasible. Selective referrals should be considered if PN expertise is unavailable.
>(部分切除と比較して、全摘出は初期腎癌患者において総死亡および非癌関連死亡の増加の素因となる。結果として、技術的に可能ならば、部分切除が試みられなければならない。部分切除の専門家がいなければ、紹介も考慮されるべきだ)
と書いています。
アブストラクトを引用しておきます。
BACKGROUND:
Relative to radical nephrectomy (RN), partial nephrectomy (PN) performed for renal cell carcinoma (RCC) may protect from non-cancer-related deaths. The authors tested this hypothesis in a cohort of PN and RN patients.
METHODS:
The Surveillance, Epidemiology, and End Results-9 database allowed identification of 2198 PN (22.4%) and 7611 RN (77.6%) patients treated for T1aN0M0 RCC between 1988 and 2004. Analyses matched for age, year of surgery, tumor size, and Fuhrman grade addressed the effect of nephrectomy type (RN vs PN) on overall mortality (Cox regression models) and on non-cancer-related mortality (competing-risks regression models).
RESULTS:
Relative to PN, RN was associated with 1.23-fold (P = .001) increased overall mortality rate, which translated into a 4.9% and 3.1% absolute increase in mortality at 5 and 10 years after surgery, respectively. Similarly, non-cancer-related death rate was significantly higher after RN in competing-risks regression models (P < .001), which translated into a 4.6% and 4.5% absolute increase in non-cancer-related mortality at 5 and 10 years after surgery, respectively.