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KMID : 1103720120660040353
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Journal of the Korean Society of Radiology
2012 Volume.66 No. 4 p.353 ~ p.362
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The Morphologic Features and Accuracy of Preoperative T-Staging in Resected Gallbladder Cancers
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Jo Sung-Ehn
Kim Mi-Young
Kim Jong-Bum
Kim Youn-Jeong
Kang Young-Hae
Lee Kun-Yong
Choi Suk-Jin
Suh Chang-Hae
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Abstract
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Purpose: To assess the morphological features and the accuracy of T staging images in surgically- proven gallbladder cancers, retrospectively.
Materials and Methods : Images of 59 surgically-proven gallbladder cancers were reviewed. Morphologic features, shape, size of tumors and the presence of stones or sludge within the images were evaluated and correlated with surgicopathologic findings.
Results: Polypoid masses were shown in 49 cases (83%). The sizes of tumors were well correlated with surgicopathologic T-stage. With ROC evaluation, the size cutoff point to differentiate the ≤ T1 versus ≥ T2 lesions was 2.4 cm. Stones or sludge were found in 25 cases (42%). The positive predictive value, negative predictive value, sensitivities, specificities, and accuracy of the ability to differentiate the ≤ T1 versus ≥ T2 lesions were 75%, 86%, 46%, 96%, 85% and those of the ability to differentiate ≤ T2 versus ≥ T3 lesions were 89%, 49%, 45%, 90%, and 61%, respectively.
Conclusion: Image analysis showed that polypoid mass and wall thickening were major findings. With this in mind, polypoid mass shows the possibility of gallbladder cancer originating from adenoma, even if the size is larger than 2 or 2.4 cm, the surgicopathologic stage could be low. Moreover, the accuracy of image based T stage on pericholecystic infiltration and wall thickening was low.
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KEYWORD
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Gallbladder Cancer, T-Stage, CT, MRI, Accuracy
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