| Autor: |
Park, Soo Yeun, Kim, Hye Jin, Park, Jun Seok, Choi, Gyu-Seog, Cho, Seung Hyun, Lee, Min A., Kim, Won Hwa, Lee, So Mi, Shin, Kyung-Min, Kim, Hye Jung, Kim, Gab Chul, Yoon, Ghilsuk, Kim, See Hyung |
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| Zdroj: |
Abdominal Radiology; May2019, Vol. 44 Issue 5, p1675-1685, 11p, 3 Black and White Photographs, 1 Diagram, 7 Charts |
| Abstrakt: |
Purpose: The aim of this study was to determine the diagnostic performance of magnetic resonance imaging (MRI)-categorized T3cd/T4 tumors for identifying high-risk stage II or stage III cancer in patients with curatively resectable colon cancer in comparison to that of multidetector computed tomography (MDCT). Materials and Methods: Thirty-eight patients with histopathologically indicated adenocarcinomas prospectively underwent MRI of the colon. Two radiologists independently and retrospectively assessed for T-category, including T3 substage (≤ T3ab vs. ≥ T3cd). The diagnostic accuracies and interreader agreements between assessments using each modality were compared using a pairwise comparison of receiver-operating characteristic curves and a weighted κ statistic, respectively. Results: Twenty-nine patients (76.3%) were histopathologically diagnosed with high-risk stage II or stage III colon cancer. The false-positive rate with MRI was lower than that with MDCT (0% vs. 7.9% for reader 1, 2.6% vs. 10.6% for reader 2). The diagnostic performance of MRI was better than that of MDCT across both readers (AUC: 0.707 vs. 0.506 [P = 0.032] for reader 1, 0.651 vs. 0.485 [P = 0.055] for reader 2). Moreover, MRI interreader agreement for the assessment of T3cd/T4 was significantly better than that of MDCT (κ = 0.821 vs. 0.391 [P = 0.017]). Conclusion: The diagnostic performance of MR imaging of the colon may be better than that of MDCT for identifying high-risk stage II or stage III cases. Particularly, colon MRI reduced the false-positive rate and improved the interreader agreement, although further studies with a larger sample size are required. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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