| Efficacy of helical CT in T-staging of gastric cancer. | |
| | |
MedLine Citation:
|
PMID: 9022773 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
PURPOSE: The purpose of this study was to evaluate the performance of helical CT in preoperative T-staging in patients with gastric cancer. METHOD: A total of 71 patients with an established diagnosis of gastric cancer [75 lesions, 46 early (T1) and 29 advanced (T2 or more) cancers] were evaluated with helical CT. Helical CT was performed with 5-mm slice thickness at 5-mm/s table incrementation. Using the volumetric data by helical scanning, axial CT images (5-mm slice thickness at 5-mm intervals) and multiplanar reconstruction (MPR) images were obtained. CT findings were compared with histopathologic studies of the resected specimen. RESULTS: Sensitivity of helical CT for gastric cancer was 26% (12 of 46) for early and 100% (29 of 29) for advanced cancer. Three lesions were misdiagnosed as gastric cancer by helical CT. Histopathologically, all early gastric cancers detected by helical CT were either polypoid or elevated types or showed massive invasion of the submucosal layer. The differentiation between T1 cancer with massive submucosal invasion and advanced cancer was difficult. The differentiation between T2 and T3 cancer was possible in 73% (19 of 26) and between T1/T2 and T3/T4 (extraserosal invasion) in 83% (34 of 41). Overall T-staging was correct in 66% (27 of 41). MPR images improved the detection rate (three lesions) or increased confidence in T-staging (eight lesions) over axial CT images. CONCLUSION: When helical CT detected gastric cancer that was not a polypoid or elevated type with underlying normal-appearing gastric wall, it was either T1 cancer with massive invasion of the cancer cells into the submucosal layer or advanced cancer. However, differentiation between these two stages was difficult on CT. Diagnosis of serosal invasion was not markedly improved by helical CT. MPR images increased confidence in the staging of certain gastric cancers, such as those in locations where CT images are susceptible to partial volume averaging effects. |
| | |
Authors:
|
T Fukuya; H Honda; K Kaneko; T Kuroiwa; K Yoshimitsu; H Irie; Y Maehara; K Masuda |
Related Documents
:
|
12819343 - Evaluation of the patient with flank pain and possible ureteral calculus. 11418423 - Multislice helical ct of focal and diffuse lung disease: comprehensive diagnosis with r... 21370263 - Brainstem metabolites in multiple system atrophy of cerebellar type: 3.0-t magnetic res... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of computer assisted tomography Volume: 21 ISSN: 0363-8715 ISO Abbreviation: J Comput Assist Tomogr Publication Date: 1997 Jan-Feb |
Date Detail:
|
Created Date: 1997-03-03 Completed Date: 1997-03-03 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 7703942 Medline TA: J Comput Assist Tomogr Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 73-81 Citation Subset: IM |
Affiliation:
|
Department of Radiology, Faculty of Medicine, Kyushu University, Fukuoka, Japan. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Aged Aged, 80 and over Female Humans Male Middle Aged Neoplasm Staging Sensitivity and Specificity Stomach Neoplasms / pathology, radiography* Tomography, X-Ray Computed / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: MRI for staging of gastric carcinoma: first results of an experimental prospective study.
Next Document: MR appearance and spectral features of injected ethanol in the liver: implication for fast MR-guided...