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Prospective Comparison of the Performance of MRI Versus CT in the Detection and Evaluation of Peritoneal Surface Malignancies

Authors :
Claramae Shulyn Chia
Louis Choon Kit Wong
Tiffany Priyanthi Hennedige
Whee Sze Ong
Hong-Yuan Zhu
Grace Hwei Ching Tan
Jin Wei Kwek
Chin Jin Seo
Jolene Si Min Wong
Chin-Ann Johnny Ong
Choon Hua Thng
Khee Chee Soo
Melissa Ching Ching Teo
Source :
Cancers; Volume 14; Issue 13; Pages: 3179
Publication Year :
2022
Publisher :
Multidisciplinary Digital Publishing Institute, 2022.

Abstract

Background: The performance of MRI versus CT in the detection and evaluation of peritoneal surface malignancies (PSM) remains unclear in the current literature. Our study is the first prospective study in an Asian center comparing the two imaging modalities, validated against intra-operative findings. Methods: A total of 36 patients with PSM eligible for CRS-HIPEC underwent both MRI and CT scans up to 6 weeks before the operation. The scans were assessed for the presence and distribution of PSM and scored using the peritoneal cancer index (PCI), which were compared against PCI determined at surgery. Results: Both MRI and CT were 100% sensitive and specific in detecting the overall presence of PSM. Across all peritoneal regions, the sensitivity and specificity for PSM detection was 49.1% and 93.0% for MRI, compared to 47.8% and 95.1% for CT (p = 0.76). MRI was more sensitive than CT for small bowel disease, although the difference did not reach statistical significance. Comparing PCI on imaging with intra-operative PCI, the mean difference was found to be −3.4 ± 5.4 (p < 0.01) for MRI, and −3.9 ± 4.1 (p < 0.01) for CT. The correlation between imaging and intra-operative PCI was poor, with a concordance coefficient of 0.76 and 0.79 for MRI and CT, respectively. Within individual peritoneal regions, there was also poor agreement between imaging and intra-operative PCI for both modalities, other than in regions 1 and 3. Conclusion: MRI and CT are comparable in the detection and evaluation of PSM. While sensitive in the overall detection of PSM, they are likely to underestimate the true disease burden.

Details

Language :
English
ISSN :
20726694
Database :
OpenAIRE
Journal :
Cancers; Volume 14; Issue 13; Pages: 3179
Accession number :
edsair.doi.dedup.....c444b0200a8d591a049b9ecdf8d54892
Full Text :
https://doi.org/10.3390/cancers14133179