What is the Optimal Preoperative Imaging Modality for Assessing Peritoneal Cancer Index? An Analysis From the United States HIPEC Collaborative. Clin Colorectal Cancer 2020 Mar;19(1):e1-e7
Date
01/25/2020Pubmed ID
31974019DOI
10.1016/j.clcc.2019.12.002Scopus ID
2-s2.0-85078611742 (requires institutional sign-in at Scopus site) 13 CitationsAbstract
BACKGROUND: Radiographic prediction of peritoneal carcinomatosis index (PCI) can improve patient selection for cytoreductive surgery. We aimed to determine the correlation of computed tomography (CT)-predicted PCI (CT-PCI) and magnetic resonance imaging (MRI)-predicted PCI (MRI-PCI) with intraoperative-PCI, and if a preoperative-PCI cutoff is associated with incomplete cytoreduction.
PATIENTS AND METHODS: Patients from the US HIPEC Collaborative (2000-2017) with appendiceal, colorectal, or peritoneal mesothelioma (PM) histology who underwent cytoreductive surgery were included. Pearson correlation coefficients were used to determine correlation between preoperative and intraoperative-PCI values. Fisher r-to-z transformation was used to compare correlations.
RESULTS: A total of 488 patients were included. Of these, 34% had noninvasive appendiceal, 30% invasive appendiceal, 28% colorectal, and 8% PM histology. CT-PCI was correlated with intraoperative-PCI for patients with noninvasive and invasive appendiceal and colorectal histologies (r = 0.689, 0.554, and 0.571; all P < .001), but not PM (r = 0.188; P = .295). MRI-PCI was correlated with intraoperative-PCI for all histologies (non-invasive appendiceal: r = 0.591; P = .002; invasive appendiceal: r = 0.848; P < .001; colorectal: r = 0.729; P < .001; PM: r = 0.890; P = .007). Comparing CT and MRI, correlations were similar in noninvasive appendiceal and colorectal histologies; MRI was better for invasive appendiceal and PM (P = .005 and P = .021, respectively). Twenty-eight (6%) patients underwent an incomplete cytoreduction (cytoreduction score, 2-3). PCI greater than 15 was associated with cytoreduction score of 2 to 3 for both CT and MRI (CT-PCI: odds ratio, 3.0; P = .033; MRI-PCI: odds ratio, 7.6; P = .071).
CONCLUSIONS: In this multi-institutional cohort, CT and MRI-PCI correlate well with intraoperative-PCI. MRI appears to be superior for invasive appendiceal and peritoneal mesothelioma. External validation in a larger population is needed.
Author List
Lee RM, Zaidi MY, Gamboa AC, Speegle S, Kimbrough CW, Cloyd JM, Leiting JL, Grotz TE, Lee AJ, Fournier KF, Powers BD, Dineen SP, Baumgartner J, Veerapong J, Clarke CN, Sussman JJ, Patel S, Hendrix RJ, Lambert LA, Vande Walle KA, Abbott DE, LaRocca CJ, Raoof M, Fackche N, Johnston FM, Staley CA, Maithel SK, Russell MCAuthor
Callisia N. Clarke MD Chief, Associate Professor in the Surgery department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
AdultAged
Appendiceal Neoplasms
Colorectal Neoplasms
Cytoreduction Surgical Procedures
Diffusion Magnetic Resonance Imaging
Female
Humans
Male
Mesothelioma
Middle Aged
Patient Selection
Peritoneal Neoplasms
Predictive Value of Tests
Preoperative Care
Retrospective Studies
Tomography, X-Ray Computed
United States