| Helical CT of the local spread of carcinoma of the gallbladder: evaluation according to the TNM system in patients who underwent surgical resection. | |
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MedLine Citation:
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PMID: 12130444 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: Our aim was to evaluate the performance of helical CT as an aid in the preoperative diagnosis of the spread of carcinomas of the gallbladder. MATERIALS AND METHODS: Two radiologists retrospectively reviewed both hard-copy and soft-copy (on a monitor with multiplanar reconstruction capability) versions of helical CT scans (3-mm collimation and 3-mm reconstruction) of 21 patients who had undergone surgical resection for carcinomas of the gallbladder. The local spread of the disease was evaluated according to the TNM system, and the results were correlated to the pathologic findings. Inter- and intraobserver differences were checked with kappa statistics. Results of the consensus interpretations were used to calculate sensitivity, specificity, and accuracy of helical CT. RESULTS: No significant inter- or intraobserver differences were found in any T category evaluation. The sensitivities of the hard-copy consensus interpretations in the diagnosis of T1, T2, T3, and T4 lesions were 33%, 64%, 80%, and 100%, respectively; specificities of hard-copy interpretations were 94%, 80%, 81%, and 95%, respectively. For soft-copy (monitor) consensus interpretations, the sensitivities for the diagnosis of T1, T2, T3, and T4 lesions were 33%, 73%, 80%, and 100%, respectively; the specificities of soft-copy interpretations were 94%, 80%, 88%, and 95%, respectively. Overall accuracy of the hard-copy interpretation was 83%; the overall accuracy of the soft-copy interpretation was not significantly different-86%. CONCLUSION: Helical CT provided 83-86% accuracy in the diagnosis of the local extent of carcinomas of the gallbladder, showing acceptable sensitivity and specificity for the T2 and more advanced lesions but poor sensitivity for the T1 lesions. Use of a monitor with multiplanar reconstructions of the CT data did not significantly improve the diagnostic accuracy. |
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Authors:
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Kengo Yoshimitsu; Hiroshi Honda; Kenji Shinozaki; Hitoshi Aibe; Toshiro Kuroiwa; Hiroyuki Irie; Kazuo Chijiiwa; Yoshiki Asayama; Kouji Masuda |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 179 ISSN: 0361-803X ISO Abbreviation: AJR Am J Roentgenol Publication Date: 2002 Aug |
Date Detail:
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Created Date: 2002-07-19 Completed Date: 2002-08-09 Revised Date: 2008-02-15 |
Medline Journal Info:
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Nlm Unique ID: 7708173 Medline TA: AJR Am J Roentgenol Country: United States |
Other Details:
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Languages: eng Pagination: 423-8 Citation Subset: AIM; IM |
Affiliation:
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Department of Clinical Radiology, Kyushu University Graduate School of Medical Sciences, 3-1-1, Maidashi, Higashi-ku Fukuoka 812-8582, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Carcinoma / pathology, radiography*, surgery Female Gallbladder Neoplasms / pathology, radiography*, surgery Humans Image Processing, Computer-Assisted Male Neoplasm Staging Observer Variation Predictive Value of Tests ROC Curve Retrospective Studies Sensitivity and Specificity Tomography, X-Ray Computed* |
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