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Evaluating Treatment Patterns for Small Cell Carcinoma of the Colon Using the National Cancer Database (NCDB)

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Objective(s)The objective of this study was to characterize the clinicopathological prognostic factors and treatment patterns for small cell carcinoma (SCC) of the colon, a rare disease without standard treatment guidelines.MethodsWe… Click to show full abstract

Objective(s)The objective of this study was to characterize the clinicopathological prognostic factors and treatment patterns for small cell carcinoma (SCC) of the colon, a rare disease without standard treatment guidelines.MethodsWe analyzed clinicopathological and treatment variables for 503 cases of histologically proven SCC colon entered into the National Cancer Database (NCDB) between 2004 and 2013. Survival curves were generated using Kaplan-Meier and compared by the log-rank test. Cox proportional hazard regression was used to control for covariates and evaluate the effect of different treatment modalities on overall survival.ResultsFour hundred seventy-two (93.8%) patients had complete clinical staging information and were therefore included in our analysis. Of these patients, 149 (31.5%) had limited stage disease (LD) and 323 (68.4%) had extensive stage disease (ED) at presentation. Median overall survival (OS) for patients with ED was significantly lower than for those with LD (4.04 months vs. 21.82 months; p < 0.001). Multivariate Cox regression analysis showed administration of chemotherapy was associated with improved survival in patients with LD and ED (p = 0.026, p < 0.001) while surgery was not associated with improved survival in patients with LD or ED (p = 0.943, p = 0.630). Radiation therapy was associated with improved survival in patients with ED (p = 0.044).ConclusionsSCC of the colon carries a poor prognosis, especially in patients presenting with metastatic disease. Surgery and chemotherapy are administered more frequently than radiation, and chemotherapy is associated with improved survival, unlike surgery.

Keywords: treatment; colon; patterns small; cancer; survival; treatment patterns

Journal Title: Journal of Gastrointestinal Cancer
Year Published: 2018

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