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. 2022 Oct;29(11):6593-6602.
doi: 10.1245/s10434-022-11949-8. Epub 2022 May 31.

Socioeconomic Barriers to CRS HIPEC for Appendiceal Cancer within a Regional Academic Hospital System

Affiliations

Socioeconomic Barriers to CRS HIPEC for Appendiceal Cancer within a Regional Academic Hospital System

Caroline Rieser et al. Ann Surg Oncol. 2022 Oct.

Abstract

Background: Appendiceal cancer with peritoneal metastases (ACPM) is a complex disease requiring multidisciplinary care. Cytoreductive surgery and hyperthermic intraperitoneal chemoperfusion (CRS HIPEC) can significantly improve survival but requires evaluation by a surgical oncologist and significant treatment endurance. The impacts of socioeconomic status (SES) and other social determinants of health on rates of surgical evaluation and treatment have not been examined.

Methods: We conducted a retrospective cohort study examining all patients with ACPM from 2010 to 2018 in a regional healthcare system. Patient characteristics, oncologic details, treatment strategies, and survival were examined. The primary outcomes of interest were referral to Surgical Oncology, receipt of CRS HIPEC, and survival.

Results: Of 194 patients identified, 94% had synchronous ACPM. The majority of patients (95%) were referred to surgical oncology. Advanced age was the only predictor of nonreferral (p < 0.001). A total of 147 patients (76%) ultimately underwent CRS HIPEC. After adjusting for medical and tumor characteristics, CRS HIPEC was less likely for patients who were unmarried [odds ratio (OR) 0.253, p = 0.004] or of low SES (OR 0.372, p = 0.03). On subanalysis of patients undergoing CRS HIPEC, median overall survival was worse for patients of low SES [51 months versus not reached (NR), p = 0.05], and this disparity persisted on multivariate analysis [hazard ratio (HR) = 2.278, p = 0.001].

Conclusions: This analysis is the first to evaluate barriers to CRS HIPEC for ACPM. While most patients were evaluated by a multidisciplinary team, nonmedical factors may play a role in the treatment received and ultimate outcomes. Addressing these disparities is crucial for ensuring equitable outcomes and improving patient care.

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Conflict of interest statement

Conflict of Interest: There are no conflicts of interest for the authors of this manuscript.

Figures

Figure 1:
Figure 1:
Study flow diagram. SES: Socioeconomic Status; CRS HIPEC: Cytoreductive Surgery Hyperthermic Intraperitoneal Chemoperfusion; PM: Peritoneal Metastases.
Figure 2:
Figure 2:. 2 Hour Drive Time Analysis Cohort:
Map of facilities and patients. CRS HIPEC facility (dark purple heart) and other facilities (purple heart) are shown in relation to patient zip code (black diamond). 1-, 2-, and 3-hour driving distance from CRS HIPEC facility depicted by areas shown in purple.
Figure 3:
Figure 3:
Survival Analysis by Socioeconomic Status (SES). A) Overall survival for the whole cohort. B) Overall survival for patients who underwent CRS HIPEC.

Comment in

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