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Annals of Surgical Oncology

, Volume 23, Issue 12, pp 3934–3940 | Cite as

Variation in the Use of Chemoradiotherapy for Stage II and III Anal Cancer: Analysis of the National Cancer Data Base

  • Cristina B. Geltzeiler
  • Vassiliki L. Tsikitis
  • Jong S. Kim
  • Charles R. ThomasJr.
  • Daniel O. Herzig
  • Kim C. Lu
Colorectal Cancer
  • 219 Downloads

Abstract

Background

Treatment for anal canal cancer has evolved from radical operations to definitive chemoradiotherapy (CRT), which allows for sphincter preservation in most patients.

Objective

The aim of this study was to examine the use of CRT for patients with stage II and III anal cancer, among different patient demographics, geographic regions, and facility types.

Methods

Utilizing the National Cancer Data Base, we examined patients with stage II and III anal canal squamous cell carcinoma from 2003 to 2010. Via univariate analysis, we examined patterns of treatment by patient demographics, tumor characteristics, geographic region, and facility type (academic vs. community). A multivariable logistic regression model was built to evaluate differences in treatment patterns when adjusting by age, sex, race, comorbidities, and stage.

Results

A total of 12,801 patients were analyzed, of which 11,312 (88 %) received CRT. After adjusting for confounders, CRT was less likely to be administered to males [odds ratio (OR) 0.61, 95 % confidence interval (CI) 0.54–0.69], Black patients (OR 0.70, 95 % CI 0.59–0.83), and those with multiple comorbidities (OR 0.60, 95 % CI 0.51–0.72). CRT was not as widely utilized in the West (OR 0.74, 95 % CI 0.59–0.93), and patients treated in academic-based centers were less likely to receive CRT (OR 0.81, 95 % CI 0.72–0.92). Improved median overall survival was observed when CRT was utilized (p = 0.008).

Conclusion

When controlling for age, sex, race, comorbidities, and stage, discrepancies in the use of CRT for anal cancer treatment exist between demographic subtypes, geographical regions, and facility types.

Keywords

Overall Survival Median Overall Survival National Comprehensive Cancer Network National Comprehensive Cancer Network Anal Cancer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors would like to thank Timur Mitin, MD, PhD, for his assistance with the critical review of this manuscript, and Mary Kwatkosky-Lawlor for her assistance with editing.

Disclosures

Cristina B. Geltzeiler, Vassiliki L. Tsikitis, Jong S. Kim, Charles R. Thomas Jr, Daniel O. Herzig, and Kim C. Lu have no disclosures or conflicts of interest to report. This work was a podium presentation at the Northwest Society of Colon and Rectal Surgeons Annual Meeting, Lake Tahoe, CA, USA, 12–15 August 2015.

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Copyright information

© Society of Surgical Oncology 2016

Authors and Affiliations

  • Cristina B. Geltzeiler
    • 1
  • Vassiliki L. Tsikitis
    • 1
  • Jong S. Kim
    • 2
  • Charles R. ThomasJr.
    • 3
  • Daniel O. Herzig
    • 1
  • Kim C. Lu
    • 1
  1. 1.Department of SurgeryOregon Health and Science UniversityPortlandUSA
  2. 2.Fariborz Maseeh Department of Mathematics and StatisticsPortland State UniversityPortlandUSA
  3. 3.Department of Radiation MedicineOregon Health and Science UniversityPortlandUSA

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