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Implications of Postoperative Complications for Survival After Cytoreductive Surgery and HIPEC: A Multi-Institutional Analysis of the US HIPEC Collaborative. Ann Surg Oncol 2020 Dec;27(13):4980-4995



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2-s2.0-85088288936   1 Citation


BACKGROUND: Postoperative complications (POCs) are associated with worse oncologic outcomes in various cancer histologies. The impact of POCs on the survival of patients with appendiceal or colorectal cancer after cytoreductive surgery (CRS) and heated intraperitoneal chemotherapy (HIPEC) is unknown.

METHODS: The US HIPEC Collaborative (2000-2017) was reviewed for patients who underwent CCR0/1 CRS/HIPEC for appendiceal/colorectal cancer. The analysis was stratified by noninvasive appendiceal neoplasm versus invasive appendiceal/colorectal adenocarcinoma. The POCs were grouped into infectious, cardiopulmonary, thromboembolic, and intestinal dysmotility. The primary outcomes were overall survival (OS) and recurrence-free survival (RFS).

RESULTS: Of the 1304 patients, 33% had noninvasive appendiceal neoplasm (n = 426), and 67% had invasive appendiceal/colorectal adenocarcinoma (n = 878). In the noninvasive appendiceal cohort, POCs were identified in 55% of the patients (n = 233). The 3-year OS and RFS did not differ between the patients who experienced a complication and those who did not (OS, 94% vs 94%, p = 0.26; RFS, 68% vs 60%, p = 0.15). In the invasive appendiceal/colorectal adenocarcinoma cohort, however, POCs (63%; n = 555) were associated with decreased 3-year OS (59% vs 74%; p < 0.001) and RFS (32% vs 42%; p < 0.001). Infectious POCs were the most common (35%; n = 196). In Multivariable analysis accounting for gender, peritoneal cancer index (PCI), and incomplete resection (CCR1), infectious POCs in particular were associated with decreased OS compared with no complication (hazard ratio [HR] 2.08; p < 0.01) or other types of complications (HR, 1.6; p < 0.01). Similarly, infectious POCs were independently associated with worse RFS (HR 1.61; p < 0.01).

CONCLUSION: Postoperative complications are associated with decreased OS and RFS after CRS/HIPEC for invasive histology, but not for an indolent disease such as noninvasive appendiceal neoplasm, and this association is largely driven by infectious complications. The exact mechanism is unknown, but may be immunologic. Efforts must target best practices and standardized prevention strategies to minimize infectious postoperative complications.

Author List

Gamboa AC, Lee RM, Turgeon MK, Zaidi MY, Kimbrough CW, Grotz TE, Leiting J, Fournier K, Lee AJ, Dineen SP, Powers BD, Veerapong J, Baumgartner JM, Clarke CN, Mogal H, Patel SH, Lee TC, Lambert LA, Hendrix RJ, Abbott DE, Pokrzywa C, Raoof M, Eng OS, Johnston FM, Greer J, Cloyd JM, Maithel SK, Staley CA


Callisia N. Clarke MD Assistant Professor in the Surgery department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Antineoplastic Combined Chemotherapy Protocols
Appendiceal Neoplasms
Cytoreduction Surgical Procedures
Middle Aged
Peritoneal Neoplasms
Postoperative Complications
Retrospective Studies
Survival Rate