Abstract
Primary pulmonary malignant fibrous histiocytoma (MFH) is very rare, so only a few imaging features have been reported. We report one case of rapidly growing primary pulmonary MFH mimicking a partially thrombosed pulmonary artery aneurysm and its radiologic findings, including multidetector row computed tomography (MDCT), conventional angiography, and fluorodeoxyglucose-positron emission tomography CT ([18F] FDG-PET/CT). On multi-phasic MDCT, this mass mimicked a pulmonary artery aneurysm with partial thrombosis. However, pulmonary artery aneurysm was excluded and suggested as a hypervascular parenchymal mass by subsequent conventional angiography. On [18F] FDG-PET/CT, it was a highly metabolic mass, showing a maximal standard uptake value (SUV) 12.1. Although primary pulmonary MFH is very rare and has no specific imaging findings, our experience might be helpful to differentiate a hypervascular pulmonary mass.
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Noh, H.W., Park, K.J., Sun, J.S. et al. Primary pulmonary malignant fibrous histiocytoma mimics pulmonary artery aneurysm with partial thrombosis: various radiologic evaluations. Eur Radiol 18, 1653–1657 (2008). https://doi.org/10.1007/s00330-008-0922-0
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DOI: https://doi.org/10.1007/s00330-008-0922-0