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Biases in the reporting of hcc tumor sizes on the liver transplant waiting list
Hepatology ( IF 12.9 ) Pub Date : 2017-08-26 , DOI: 10.1002/hep.29269
Mariya L. Samoylova 1 , Mark J. Nigrini 2 , Jennifer L. Dodge 3 , John P. Roberts 3
Affiliation  

We investigated the possibility that patients with hepatocellular carcinoma (HCC) listed for liver transplant with tumors just outside stage T2 size criteria may be inaccurately reported as just meeting the tumor size criteria for transplant. The United Network for Organ Sharing/Standard Transplant Analysis and Research database identified 12,958 patients listed for liver transplants with HCC exception points from 2006 to 2013, 9,168 of whom were listed with one tumor. A logistic power peak function was fitted to the single‐tumor size histogram, with the fitted values representing unbiased expected values. The difference between the observed and expected tumor counts for 2.0 cm and 5.0 cm was 238 (22%) and 66 (57%), respectively. This suggests that up to 304 (3.0%) patients with tumors outside of transplant criteria had their measurements recorded at the margins of eligibility. A risk‐adjusted Poisson model evaluated the ratio of observed to expected HCC recurrence by tumor size. There were 435 HCC recurrences among 6,049 transplants. Only 2.0‐cm tumors had observed to expected recurrence differing from 1 (ratio 0.73, 95% confidence interval 0.57‐0.94), indicating a 27% lower than expected rate of recurrence. Conclusion: Higher than expected observed tumor counts at the lower transplant criteria margin were corroborated by lower than expected HCC recurrence, suggesting that tumor sizes at the margins of HCC transplant criteria may be subject to inaccurate reporting. (Hepatology 2017;66:1144‐1150)

中文翻译:

在肝移植等候名单上报告 hcc 肿瘤大小的偏差

我们调查了肝细胞癌 (HCC) 患者的肝移植肿瘤刚好超出 T2 期大小标准的可能性,可能被错误地报告为仅满足移植的肿瘤大小标准。器官共享联合网络/标准移植分析和研究数据库确定了 2006 年至 2013 年 12,958 名肝移植患者,其中 9,168 名患者被列为患有 1 个肿瘤。将逻辑功率峰值函数拟合到单肿瘤大小直方图,拟合值表示无偏期望值。2.0 cm 和 5.0 cm 处观察到的和预期的肿瘤计数之间的差异分别为 238 (22%) 和 66 (57%)。这表明最多 304 (3. 0%) 肿瘤超出移植标准的患者的测量值记录在合格的边缘。风险调整泊松模型根据肿瘤大小评估了观察到的与预期的 HCC 复发的比率。在 6,049 例移植中,有 435 例 HCC 复发。只有 2.0 厘米的肿瘤观察到预期复发率不同于 1(比率 0.73,95% 置信区间 0.57-0.94),表明复发率比预期低 27%。结论:低于预期的 HCC 复发证实了在较低移植标准边缘观察到的肿瘤计数高于预期,这表明 HCC 移植标准边缘的肿瘤大小可能会受到不准确报告的影响。(肝病学 2017;66:1144-1150)风险调整泊松模型根据肿瘤大小评估了观察到的与预期的 HCC 复发的比率。在 6,049 例移植中,有 435 例 HCC 复发。只有 2.0 厘米的肿瘤观察到预期复发率不同于 1(比率 0.73,95% 置信区间 0.57-0.94),表明复发率比预期低 27%。结论:低于预期的 HCC 复发证实了在较低移植标准边缘观察到的肿瘤计数高于预期,这表明 HCC 移植标准边缘的肿瘤大小可能会受到不准确报告的影响。(肝病学 2017;66:1144-1150)风险调整泊松模型根据肿瘤大小评估了观察到的与预期的 HCC 复发的比率。在 6,049 例移植中,有 435 例 HCC 复发。只有 2.0 厘米的肿瘤观察到预期复发率不同于 1(比率 0.73,95% 置信区间 0.57-0.94),表明复发率比预期低 27%。结论:低于预期的 HCC 复发证实了在较低移植标准边缘观察到的肿瘤计数高于预期,这表明 HCC 移植标准边缘的肿瘤大小可能会受到不准确报告的影响。(肝病学 2017;66:1144-1150)表明比预期的复发率低 27%。结论:低于预期的 HCC 复发证实了在较低移植标准边缘观察到的肿瘤计数高于预期,这表明 HCC 移植标准边缘的肿瘤大小可能会受到不准确报告的影响。(肝病学 2017;66:1144-1150)表明比预期的复发率低 27%。结论:低于预期的 HCC 复发证实了在较低移植标准边缘观察到的肿瘤计数高于预期,这表明 HCC 移植标准边缘的肿瘤大小可能会受到不准确报告的影响。(肝病学 2017;66:1144-1150)
更新日期:2017-08-26
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