D'Amico Thomas A
Division of Thoracic Surgery, Duke University Medical Center, Durham, NC.
Gastrointest Cancer Res. 2007 Sep;1(5):188-96.
Esophageal cancer is a virulent malignancy associated with a 5-year overall survival of approximately 5%. Treatment remains controversial-despite the results of prospective, randomized trials of combined-modality therapy-because results are poor with all strategies. The role of surgical resection in patients with esophageal cancer is controversial. The fact that most patients have advanced disease at the time of diagnosis makes surgery futile in the majority of cases. Nevertheless, surgery is the best option for cure in early-stage esophageal cancer and remains the superior modality for local control in locally advanced disease. The benefits and drawbacks of several surgical approaches are discussed in this review. Multiple factors are implicated in the etiology of postesophagectomy complications, the rate of which is quite high. Perhaps the most important contributor to morbidity and mortality after esophagectomy is the development of pulmonary complications. Over the past decade, there has been a trend toward the increased use of trimodality therapy in potentially operable patients-induction chemotherapy and radiation therapy, followed by surgery. The rationale for using induction therapy is that it allows simultaneous delivery of local (radiation therapy) and systemic (chemotherapy) modalities, provides for early tumor regression and symptom control, results in improved subsequent local control, and identifies responding patients who might benefit from adjuvant therapy. Thus, on the basis of recent studies and meta-analyses, there may be a modest survival advantage for patients who receive induction chemotherapy followed by surgery, compared with surgery alone. There is also an apparent increase in treatment-related mortality, mainly for patients receiving induction chemotherapy and radiotherapy. Currently, National Comprehensive Cancer Network guidelines support the use of induction therapy only in established clinical trial protocols.
食管癌是一种恶性程度高的癌症,5年总生存率约为5%。尽管联合治疗的前瞻性随机试验取得了一些结果,但治疗方案仍存在争议,因为所有治疗策略的效果都很差。手术切除在食管癌患者中的作用存在争议。大多数患者在诊断时已处于疾病晚期,这使得手术在大多数情况下徒劳无功。然而,手术是早期食管癌治愈的最佳选择,并且仍然是局部晚期疾病局部控制的首选方式。本文综述了几种手术方法的利弊。食管切除术后并发症的病因涉及多个因素,其发生率相当高。食管切除术后发病率和死亡率的最重要因素可能是肺部并发症的发生。在过去十年中,对于潜在可手术的患者,采用三联疗法(诱导化疗和放疗,随后进行手术)的趋势有所增加。使用诱导治疗的基本原理是它允许同时进行局部(放疗)和全身(化疗)治疗,实现早期肿瘤退缩和症状控制,改善后续局部控制,并识别可能从辅助治疗中获益的有反应的患者。因此,根据最近的研究和荟萃分析,与单纯手术相比,接受诱导化疗后再手术的患者可能有适度的生存优势。治疗相关死亡率也明显增加,主要是接受诱导化疗和放疗的患者。目前,美国国立综合癌症网络指南仅支持在既定的临床试验方案中使用诱导治疗。