Abstract
Complete response to neoadjuvant therapy, determined by pathologic examination of the resection specimen (pCR), is associated with a favorable outcome in esophageal adenocarcinomas (EAC), but there is significant heterogeneity in survival reported within this group. Our aim was to determine predictors of disease recurrence (DR) and survival in EAC patients with pCR to neoadjuvant therapy. A total of 93 EAC patients with pCR to neoadjuvant therapy were identified, and a predetermined set of clinicopathologic variables was examined, including patient age, sex, tumor location, pretreatment tumor size, endoscopic ultrasound T and N stage, histologic tumor type, and grade in pretreatment biopsies. The esophagectomy specimens were evaluated for the extent of sampling of the tumor bed, depth of treatment-related changes, presence of treatment effect in lymph nodes, and the total number of lymph nodes examined. Complete histologic examination of the tumor bed was the most significant predictor of favorable outcome for both DR (hazard ratio [HR]=0.42; 95% confidence interval [CI]: 0.21-0.82; P=0.011) and disease-specific mortality (HR=0.40; 95% CI: 0.22-0.70; P<0.01). The presence of a high-grade adenocarcinoma component in pretreatment biopsies (HR=2.19; 95% CI: 1.22-3.94; P<0.01) was associated with a higher disease-specific mortality, and involvement of the gastroesophageal junction (HR=2.37; 95% CI: 1.11-5.06; P=0.026) was associated with a higher rate of DR. Heterogeneity in outcomes for EAC patients with pCR to therapy can be explained by adequacy of histologic examination of the tumor bed, high tumor grade, and involvement of the gastroesophageal junction.
摘要
食管腺癌(EAC)对新辅助治疗达到完全缓解,可以通过切除标本的病理检查(pCR)来判断,它与好的预后相关联,但是有人报道组内病人生存期存在显著异质性。
本文旨在评价新辅助治疗完全缓解的EAC病人疾病复发(DR)和生存的预测因素。共有93例EAC病人通过pCR判断新辅助治疗完全缓解,分析了一系列临床病理变量,包括病人年龄、性别、肿瘤部位、治疗前肿瘤大小、超声内镜TN分期、肿瘤组织学类型以及术前活检病理分级。评估食管切除标本中瘤床的范围、治疗反应的深度、淋巴结有无治疗反应以及送检淋巴结的总数目。
仔细对瘤床进行组织学检查,对DR(HR=0.42;95%CI:0.21-0.82;P=0.011)和疾病别死亡率(HR=0.40;95%CI:0.22-0.70;P<0.01)都是最重要的有利预后因素。术前活检高级别腺癌成分的存在与疾病别死亡率高相关(HR=2.19;95% CI:1.22-3.94;P<0.01),食管-胃结合部的累及与高DR相关(HR=2.37;95%CI:1.11-5.06;P=0.026)。
通过pCR判断EAC病人新辅助治疗完全缓解,结果中的异质性可能与瘤床组织学检查是否充分、肿瘤分级高以及食管-胃结合部累及有关。
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