Abstract
To determine the value of 18F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) in differentiating malignancy of pulmonary artery (PA) from pulmonary thromboembolism (PTE) based on a larger number of cases by pooling our cases and those from the literature. Consecutive patients with a PA lesion who had undergone 18F-FDG PET/CT in our hospital were retrospectively reviewed. Moreover, PubMed, Embase, and Medline were searched for literature reporting individual maximum standardised uptake value (SUVmax) of the malignant PA lesion and/or PTE. 18F-FDG activity was compared between PA malignancy and PTE by pooling the data from literature and our patients. Receiver operating characteristic curve analysis was performed to determine the ability of SUVmax to differentiate PA malignancy from PTE. From our database, we identified 11 patients with pulmonary artery sarcoma (PAS), and nine cases of PTE. Fifty patients with a malignant PA lesion (40 cases of PAS and 10 cases of tumor embolism) and 22 subjects with PTE were extracted from the literature. In our cases, the SUVmax of PAS (11.1 ± 4.9, range: 5.5–19.9) was significantly higher than that of PTE (1.9 ± 0.6, range: 1.1–3.2; P < 0.001). There was no significant difference in the SUVmax between the literature data and our cases in malignant lesions or in PTE. Based on the pooled analysis of the literature data and our cases (61 cases of malignant lesions and 31 cases of PTE), the area under the curve for SUVmax to differentiate PA malignancy from PTE was 0.996 (95% CI: 0.989–1.000). At a cutoff value of 3.3, the sensitivity, specificity, and accuracy were 98.4%, 96.8%, and 97.8%, respectively. The 18F-FDG uptake value is an accurate index for determining PA malignancy.
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Abbreviations
- AUC:
-
Area under the curve
- CT:
-
Computed tomography
- CTPA:
-
CT pulmonary angiography
- FDG:
-
Fluorodeoxyglucose
- MRI:
-
Magnetic resonance imaging
- MRPA:
-
Magnetic resonance pulmonary angiography
- PA:
-
Pulmonary artery
- PAS:
-
Pulmonary artery sarcoma
- PET:
-
Positron emission tomography
- PTE:
-
Pulmonary thromboembolism
- ROC:
-
Receiver operating characteristic
- ROI:
-
Region of interest
- SUVmax :
-
Maximum standardised uptake value
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Xi, XY., Gao, W., Gong, JN. et al. Value of 18F-FDG PET/CT in differentiating malignancy of pulmonary artery from pulmonary thromboembolism: a cohort study and literature review. Int J Cardiovasc Imaging 35, 1395–1403 (2019). https://doi.org/10.1007/s10554-019-01553-5
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DOI: https://doi.org/10.1007/s10554-019-01553-5