Primary small cell carcinoma of the esophagus.
Journal of Thoracic Oncology(2008)
Abstract
Primary small cell esophageal carcinoma (SCEC) is a rare and aggressive disease for which there is no recommended standard treatment at this time.A total of 126 patients with SCEC, diagnosed histologically between May 1985 and June 2005 at our institution, were analyzed retrospectively. All were staged according to the Veterans' Administration Lung Study Group staging system. The TNM system for esophageal carcinoma (6th edition, American Joint Committee on Cancer) was also used for those who underwent esophagectomies. SPSS (10.0) software was used for statistical analysis. Cox's hazard regression model was performed to identify prognostic factors. The Kaplan-Meier and log-rank methods were used to estimate and compare survival rates. The chi2 test was performed to examine frequencies between different groups.Through a median follow-up of 13 months, 108 patients died, 10 were alive, and 8 were lost to follow-up. Of the entire study population, the overall median survival time (MST) and 1-, 3-, and 5-year overall survival rates were 12.5 months and 52.2%, 15.9%, and 12.2%, respectively. For limited disease, the MST and 1-, 2-, and 3-year overall survival rates were 14.0 months and 62.1%, 30.8%, and 22.4%, respectively; for extensive disease, the respective values were 7.0 months and 29.3%, 13.6%, and 2.7% (p = 0.0001). The MST of 14.5 months for cases who received chemotherapy was superior to that of 5.2 months for cases who did not (p = 0.0001). Tumor stage, length of the primary lesion, and chemotherapy, but not surgery were independent prognostic factors in a multivariate analysis.SCEC is systemic disease. Tumor stage and chemotherapy were independent prognostic factors. Systemic therapy, based on chemotherapy with radiotherapy, is recommended.
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Key words
Esophageal small cell carcinoma,Chemotherapy,Prognosis
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