背景与目的探讨术前诱导治疗在胸腺瘤中的应用及其对局部进展期胸腺瘤预后的影响。方法收集中国胸腺肿瘤协作组(Chinese Alliance of Research for hTymomas, ChART)1994年1月1日至2012年12月31日回顾性数据库中局部进展期胸腺瘤(Mas...背景与目的探讨术前诱导治疗在胸腺瘤中的应用及其对局部进展期胸腺瘤预后的影响。方法收集中国胸腺肿瘤协作组(Chinese Alliance of Research for hTymomas, ChART)1994年1月1日至2012年12月31日回顾性数据库中局部进展期胸腺瘤(Masaoka-Koga分期为III期-IVa期)病例。分为诱导治疗组和直接手术组,对比分析两组的R0切除率、5年复发率及5年生存率等指标。诱导治疗组术后分期为Masaoka-Koga I期-II期的病例视为诱导治疗后降期。为更加精确评估诱导治疗效果,在剔除术后IV期病例的基础上,再次将诱导治疗组术后Masaoka-Koga I期-III期的病例与直接手术组Masaoka-Koga III期的病例进行对比分析。结果ChART回顾性数据库1,713例有效病例中,局部进展期胸腺瘤706例,仅68例(4%)作了术前诱导治疗,R0切除率为67.6%,5年复发率为44.9%,5年与10年生存率分别为49.7%和19.9%。其中17例诱导治疗后达到降期,降期亚组中胸腺瘤的比例高于胸腺癌(38.7%vs 13.9%,P=0.02);与未降期亚组相比,降期亚组获得更高的5年生存率(93.8%vs 35.6%,P=0.013)。剔除术后IV期的病例后,直接手术组和诱导治疗组R0切除率接近(76.4%vs 73.3%,P=0.63),但5年生存率差异明显(85.2%vs 68.1%,P<0.001),对于降期亚组,5年生存率优于直接手术组(93.8%vs 85.2%, P=0.438),未降期亚组5年生存率仅35.6%,明显差于降期亚组和直接手术组(P<0.001)。结论术前诱导治疗目前尚未在局部进展期胸腺瘤中广泛应用,但ChART的回顾性数据研究显示通过有效的术前诱导治疗可以使难以彻底切除的病例降期后增加R0切除的机会,从而延长生存,特别是胸腺瘤的病例。这一初步结果将有助于未来的研究。展开更多
AIM To evaluate whether pathologically early hepatocellular carcinoma(HCC) exhibited local tumor progression after radiofrequency ablation(RFA) less often than typical HCC.METHODS Fifty pathologically early HCCs [tumo...AIM To evaluate whether pathologically early hepatocellular carcinoma(HCC) exhibited local tumor progression after radiofrequency ablation(RFA) less often than typical HCC.METHODS Fifty pathologically early HCCs [tumor diameter(mm): mean, 15.8; range, 10-23; follow-up days after RFA: median, 1213; range, 216-2137] and 187 typical HCCs [tumor diameter(mm): mean, 15.6; range, 6-30; follow-up days after RFA: median, 1116; range, 190-2328] were enrolled in this retrospective study. The presence of stromal invasion(namely, tumor cell invasion into the intratumoral portal tracts) was considered to be the most important pathologic finding for the diagnosis of early HCCs. Typical HCC was defined as the presence of a hyper-vascular lesion accompanied by delayed washout using contrastenhanced computed tomography or contrast-enhanced magnetic resonance imaging. Follow-up examinations were performed at 3-mo intervals to monitor for signs of local tumor progression. The local tumor progression rates of pathologically early HCCs and typical HCCs were then determined using the Kaplan-Meier method.RESULTS During the follow-up period for the 50 pathologically early HCCs, 49(98%) of the nodules did not exhibit local tumor progression. However, 1 nodule(2%) was associated with a local tumor progression found 636 d after RFA. For the 187 typical HCCs, 46(24.6%) of the nodules exhibited local recurrence after RFA. The follow-up period until the local tumor progression of typical HCC was a median of 605 d, ranging from 181 to 1741 d. Among the cases with typical HCCs, local tumor progression had occurred in 7.0%(7/187), 16.0%(30/187), 21.9%(41/187) and 24.6%(46/187) of the cases at 1, 2, 3 and 4 years, respectively. Pathologically early HCC was statistically associated with a lower rate of local tumor progression, compared with typical HCC, when evaluated using a log-rank test(P = 0.002). CONCLUSION The rate of local tumor progression for pathologically early HCCs after RFA was significantly lower than that for typical HCCs.展开更多
文摘AIM To evaluate whether pathologically early hepatocellular carcinoma(HCC) exhibited local tumor progression after radiofrequency ablation(RFA) less often than typical HCC.METHODS Fifty pathologically early HCCs [tumor diameter(mm): mean, 15.8; range, 10-23; follow-up days after RFA: median, 1213; range, 216-2137] and 187 typical HCCs [tumor diameter(mm): mean, 15.6; range, 6-30; follow-up days after RFA: median, 1116; range, 190-2328] were enrolled in this retrospective study. The presence of stromal invasion(namely, tumor cell invasion into the intratumoral portal tracts) was considered to be the most important pathologic finding for the diagnosis of early HCCs. Typical HCC was defined as the presence of a hyper-vascular lesion accompanied by delayed washout using contrastenhanced computed tomography or contrast-enhanced magnetic resonance imaging. Follow-up examinations were performed at 3-mo intervals to monitor for signs of local tumor progression. The local tumor progression rates of pathologically early HCCs and typical HCCs were then determined using the Kaplan-Meier method.RESULTS During the follow-up period for the 50 pathologically early HCCs, 49(98%) of the nodules did not exhibit local tumor progression. However, 1 nodule(2%) was associated with a local tumor progression found 636 d after RFA. For the 187 typical HCCs, 46(24.6%) of the nodules exhibited local recurrence after RFA. The follow-up period until the local tumor progression of typical HCC was a median of 605 d, ranging from 181 to 1741 d. Among the cases with typical HCCs, local tumor progression had occurred in 7.0%(7/187), 16.0%(30/187), 21.9%(41/187) and 24.6%(46/187) of the cases at 1, 2, 3 and 4 years, respectively. Pathologically early HCC was statistically associated with a lower rate of local tumor progression, compared with typical HCC, when evaluated using a log-rank test(P = 0.002). CONCLUSION The rate of local tumor progression for pathologically early HCCs after RFA was significantly lower than that for typical HCCs.