The utility of FDG-PET/CT and other imaging techniques in the evaluation of IgG4-related disease.
Joint Bone Spine
; 81(4): 331-6, 2014 Jul.
Article
em En
| MEDLINE
| ID: mdl-24568886
ABSTRACT
OBJECTIVES:
This study aimed to evaluate the utility of imaging techniques, including 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT), in immunoglobulin (IgG)4-related disease (IgG4-RD).METHODS:
We reviewed eight IgG4-RD patients who were referred to our hospital between August 2006 and April 2012. All cases underwent FDG-PET/CT and brain magnetic resonance imaging (MRI) and endobronchial ultrasonography (EBUS) were also performed in five cases and one case, respectively.RESULTS:
Although nearly all patients with IgG4-RD in this study were negative for CRP (mean 0.22 mg/dL), various organ involvement sites were detected by FDG-PET/CT. In the active phase in two autoimmune pancreatitis (AIP) cases, FDG-PET/CT showed longitudinal and heterogeneous FDG accumulation in the pancreas with FDG uptake in the hilar or mediastinal lymph nodes. Follow-up FDG-PET/CT after therapy in one case revealed that the abnormal FDG uptake in all affected lesions had completely disappeared. In two cases, brain MRI revealed asymptomatic hypertrophic pachymeningitis. In one case, EBUS imaging of mediastinal lymph node swelling was consistent with tortuous vessels with high Doppler signals and hyperechoic strands between lymph nodes.CONCLUSIONS:
When FDG-PET/CT shows FDG accumulation, characteristic of IgG4-RD in organs, without evidence of an associated inflammatory reaction, a diagnosis of IgG4-RD can be made. Treatment effects can be assessed by the disappearance of FDG uptake. A routine brain MRI is useful for detecting asymptomatic hypertrophic pachymeningitis. EBUS may also be useful for differentiating among the etiologies of lymphadenopathy with characteristic sonographic imaging findings.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doenças Autoimunes
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Imunoglobulina G
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Tomografia Computadorizada por Raios X
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Tomografia por Emissão de Pósitrons
Tipo de estudo:
Diagnostic_studies
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Observational_studies
/
Risk_factors_studies
Aspecto:
Patient_preference
Limite:
Aged
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Aged80
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Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Joint Bone Spine
Assunto da revista:
REUMATOLOGIA
Ano de publicação:
2014
Tipo de documento:
Article