A high CRP level is associated with tumor progression and poor survival in patients with esophageal squamous cell carcinoma.

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The Ncx/Hox11L.1 gene, a member of the Hox11 homeobox gene family, is mainly expressed in neural crest-derived tissues. To elucidate the role of Ncx/Hox11L.1, the gene has been inactivated in embryonic stem cells by homologous recombination. The homozygous mutant mice were viable. These mice developed megacolon with enteric ganglia by age 3-5 wk. Histochemical analysis of the ganglia revealed that the enteric neurons hyperinnervated in the narrow segment of megacolon. Some of these neuronal cells degenerated and neuronal cell death occurred in later stages. We propose that Ncx/Hox11L.1 is required for maintenance of proper functions of the enteric nervous system. These mutant mice can be used to elucidate a novel pathogenesis for human neuronal intestinal dysplasia. ( J. Clin. Invest. 1997. 100:795-801.)

In order to minimize the invasiveness of the operative procedure for thoracic esophageal cancer, several procedures have been introduced since January 1997. They included: (i) perioperative use of steroids; (ii) muscle-sparing thoracotomy without costectomy; (iii) preparation of the gastric tube with preservation of sufficient blood supply; (iv) reconstruction of the alimentary tract via posterior-mediastinal route; and (v) formation of anastomosis between the remaining esophagus and the gastric tube at a location between the gastroepiploic arteries of the gastric greater curvature. Twenty-one patients who did not receive preoperative chemoradiotherapy underwent the newly developed procedure, and were compared with those receiving the original procedure. Hospital mortality was zero, and postoperative systemic inflammatory response syndrome was suppressed. The mean postoperative hospital stay was 21.5 days, and the actuarial 3-year survival rate was 76.2%. From the comparison with those receiving the original procedure, it can be concluded that the newly developed procedures were effective in minimizing surgical invasiveness and were sufficiently curative in terms of cancer treatment.

Neoadjuvant chemoradiotherapy (CRT) was expected to improve surgical curability and prognosis for advanced esophageal cancer. However, the clinical efficacy of neoadjuvant CRT followed by esophagectomy with three-field lymphadenectomy (3FL) for initially resectable esophageal squamous cell carcinoma (SCC) remains unclear. Since 1998, we have defined the status of metastases to five or more nodes, or nodal metastases present in all three fields as multiple lymph node metastasis, which was previously shown to be associated with poor prognosis. Between 1998 and 2002, 83 patients with initially resectable esophageal SCC were prospectively allocated into two groups, according to the clinical status of nodal metastasis. Nineteen patients clinically accompanied by multiple lymph node metastasis initially underwent neoadjuvant CRT followed by curative esophagectomy with 3FL (CRT group). The other 64 patients clinically without multiple lymph node metastasis immediately received curative esophagectomy with 3FL (control group). Although the overall morbidity rate was significantly higher in the CRT group, no in-hospital death occurred in either group. Patients without pathologic multiple lymph node metastasis in the CRT group showed a significantly better disease-free survival rate than either patients pathologically with multiple lymph node metastasis in the control group or those in the CRT group. However, the differences in the overall survival rate among the groups were not significant. Thus, the significant survival benefit by neoadjuvant CRT in addition to esophagectomy with 3FL was not confirmed, although it may have been advantageous, without increase in mortality, to at least some patients who responded well to neoadjuvant CRT. Therefore, neoadjuvant CRT can be an initial treatment of choice for resectable esophageal SCC clinically with multiple lymph node metastasis. The prediction of response to CRT and the development of alternative treatment for hematogenous recurrence could achieve a further survival benefit of this trimodality treatment.

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Background. Perioperative steroid therapy has been shown to be safe and effective in inhibiting the production of inflammatory mediators and reducing postoperative hospital morbidity. However, there is limited information to show the effect of steroid therapy on long-term survival. In this study we evaluated the effect of perioperative steroid therapy on long-term survival of patients with thoracic esophageal cancer. Methods. Between 1993 and 2000, 141 consecutive patients with primary thoracic esophageal cancer underwent radical esophagectomy. A total of 78 patients who underwent surgery between 1997 and 2000 received perioperative steroid therapy. Sixty-three patients who underwent surgery between 1993 and 1996 were analyzed as the control group. In the steroid group, 250 mg methylprednisolone was administered intravenously just before surgery followed by 125 mg on postoperative days 1 and 2. The postoperative course and overall cause-specific survival rates were compared between the groups. Results. The postoperative hospital morbidity rate was significantly lower in the steroid group than in the control group. Although overall survival of the steroid group was better than the control group, cause-specific survival of both groups was similar. Multivariate analysis suggested that the depth of tumor and postoperative hospital morbidity were significant independent prognostic factors; however, steroid therapy was not statistically significant after adjusting for pathological variables. Conclusions. Perioperative steroid therapy may improve the postoperative course but does not improve the longterm survival of patients with thoracic esophageal cancer.