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Diagnostic Yield of Body CT and Whole-Body FDG PET/ CT for Initial Systemic Staging in Patients With Suspected Primary CNS Lymphoma: A Systematic Review and Meta-Analysis

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Abstract
BACKGROUND. Several guidelines recommend body imaging for the initial workup of patients with suspected primary CNS lymphoma, to exclude subclinical systemic involvement. However, to our knowledge, the diagnostic yield of body CT (contrast-enhanced CT of the chest, abdomen, and pelvis) and whole-body FDG PET/CT for the evaluation of subclinical systemic lymphoma has not yet been systematically evaluated.

OBJECTIVE. The purpose of this study was to investigate and compare the diagnostic yield of body CT and whole-body FDG PET/CT in detecting subclinical systemic lymphoma in patients with suspected primary CNS lymphoma.

EVIDENCE ACQUISITION. A systematic search of the MEDLINE and EMBASE databases through July 5, 2020, was conducted to identify studies evaluating the diagnostic yield of body CT or whole-body FDG PET/CT in detecting subclinical systemic lymphoma in patients with suspected primary CNS lymphoma. Pooled estimates of the diagnostic yield of both imaging modalities were calculated using the DerSimonian and Laird random-effects model. The false referral rate and the rate of incidental secondary malignancy were also pooled.

EVIDENCE SYNTHESIS. Nine original articles on studies evaluating a total of 1040 patients were included. In detecting subclinical systemic lymphoma, the pooled diagnostic yields of body CT and whole-body FDG PET/CT were 2.5% (95% CI, 1.5-3.9%) and 4.9% (95% CI, 2.8-8.5%), respectively. In the subgroup analysis, the diagnostic yield of whole-body FDG PET/CT was significantly higher than that of body CT (p=.03). Four studies reported changes in the management plan: the R-CHOP (rituximab, cyclophosphamide, hydroxydaunorubicin, vincristine, and prednisone) regimen with or without radiation therapy was added if extracranial lymphoma involvement was detected by body CT or whole-body FDG PET/CT. The pooled false referral rate of whole-body FDG PET/CT was 5.3% (95% CI, 2.2-12.0%). The pooled rate of incidental secondary malignancy detected on whole-body FDG PET/CT was 3.1% (95% CI, 1.7-5.6%).

CONCLUSION. Body imaging should be used in the initial workup of patients with suspected primary CNS lymphoma, to exclude systemic involvement. Whole-body FDG PET/CT may be a better alternative to body CT.

CLINICAL IMPACT. Our results support current National Comprehensive Cancer Network guidelines for the use of body imaging to exclude subclinical systemic involvement in patients with suspected primary CNS lymphoma.
Author(s)
박호영서종현Raymond Y HuangJeffrey P Guenette김호성
Issued Date
2021
Type
Article
Keyword
Central Nervous System Neoplasms - diagnostic imagingCentral Nervous System Neoplasms - pathologyFluorodeoxyglucose F18HumansLymphoma - diagnostic imagingLymphoma - pathologyNeoplasm StagingPositron Emission Tomography ComputedTomography - methodsRadiopharmaceuticalsReproducibility of ResultsSensitivity and SpecificityTomographyX-Ray Computed - methodsWhole Body Imaging - methods
DOI
10.2214/AJR.20.24036
URI
https://oak.ulsan.ac.kr/handle/2021.oak/7385
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_crossref_primary_10_2214_AJR_20_24036&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Diagnostic%20Yield%20of%20Body%20CT%20and%20Whole-Body%20FDG%20PET%2F%20CT%20for%20Initial%20Systemic%20Staging%20in%20Patients%20With%20Suspected%20Primary%20CNS%20Lymphoma:%20A%20Systematic%20Review%20and%20Meta-Analysis&offset=0&pcAvailability=true
Publisher
AMERICAN JOURNAL OF ROENTGENOLOGY
Location
미국
Language
영어
ISSN
0361-803X
Citation Volume
216
Citation Number
5
Citation Start Page
1172
Citation End Page
1182
Appears in Collections:
Medicine > Medicine
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