The impact of radiological retroperitoneal lymphadenopathy on survival after cytoreductive surgery and hyperthermic intraperitoneal chemotherapy for colorectal peritoneal metastases

van der Werf, L. R., Wassenaar, E., de Niet, A., Lalezari, F., Braam, H. J., van Ramshorst, B., Nederend, J., de Hingh, I. H. J. T., Kok, N. F. M. & Aalbers, A. G. J., Mar-2019, In : European Journal of Surgical Oncology. 45, 3, p. 376-382 7 p.

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  • L R van der Werf
  • E Wassenaar
  • A de Niet
  • F Lalezari
  • H J Braam
  • B van Ramshorst
  • J Nederend
  • I H J T de Hingh
  • N F M Kok
  • A G J Aalbers

OBJECTIVES: To investigate the impact of retroperitoneal lymphadenopathy (RPLP) on pre-operative CT scan on overall survival (OS) and disease-free survival (DFS) after cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS-HIPEC) for peritoneal metastases (PM) of colorectal cancer.

BACKGROUND: In patients with PM enlarged retroperitoneal lymph nodes (RPLP) are usually considered extra-regional lymph node metastases and therefore these patients may be excluded from CRS-HIPEC. This is a clinical dilemma since it is often hard to obtain histology from these nodes.

METHODS: In this multicenter, retrospective study all consecutive patients with colorectal PM treated with CRS-HIPEC between 2004 and 2013 were included. The preoperative CT-scan was re-analyzed for the presence of RPLP based on the radiological appearance of enlarged lymph nodes. Outcomes were OS and DFS. Kaplan-Meier methods and Cox regression modeling were used to analyze the impact of RPLP on OS and DFS.

RESULTS: In 25 of 401 patients (6.1%) RPLP was observed on the preoperative CT-scan. Patient, tumor and surgical characteristics did not statistically significantly differ between groups with and without RPLP. After a median follow-up of 46 months, the one-, three- and five-year survival was 80%, 59%, 38% and 90%, 50%, 36% in the group with and without RPLP respectively. Median OS (47 vs. 35 months, logrank: p = 0.70) and median DFS (14 vs. 15 months, logrank: p = 0.81) did not statistically significantly differ between groups. In multivariable analysis, RPLP did not significantly influence survival.

CONCLUSION: Enlarged retroperitoneal lymph nodes on a pre-operative CT-scan should not automatically exclude patients from CRS-HIPEC.

Original languageEnglish
Pages (from-to)376-382
Number of pages7
JournalEuropean Journal of Surgical Oncology
Issue number3
Publication statusPublished - Mar-2019
Externally publishedYes


  • Aged, Colorectal Neoplasms/mortality, Cytoreduction Surgical Procedures/methods, Disease-Free Survival, Female, Follow-Up Studies, Humans, Hyperthermia, Induced/methods, Lymph Nodes/diagnostic imaging, Lymphadenopathy/diagnosis, Male, Middle Aged, Netherlands/epidemiology, Peritoneal Neoplasms/diagnosis, Retrospective Studies, Survival Rate/trends, Time Factors, Tomography, X-Ray Computed/methods

ID: 92268074