Imaging features of primary Sarcomas of the great vessels in CT, MRI and PET/CT: a single-center experience View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2013-12

AUTHORS

Christian von Falck, Bernhard Meyer, Christine Fegbeutel, Florian Länger, Frank Bengel, Frank Wacker, Thomas Rodt

ABSTRACT

BACKGROUND: To investigate the imaging features of primary sarcomas of the great vessels in CT, MRI and (18)F-FDG PET/CT. METHODS: Thirteen patients with a primary sarcoma of the great vessels were retrospectively evaluated. All available images studies including F-18 FDG PET(/CT) (n = 4), MDCT (n = 12) and MRI (n = 6) were evaluated and indicative image features of this rare tumor entity were identified. RESULTS: The median interval between the first imaging study and the final diagnosis was 11 weeks (0-12 weeks). The most frequently observed imaging findings suggestive of malignant disease in patients with sarcomas of the pulmonary arteries were a large filling defect with vascular distension, unilaterality and a lack of improvement despite effective anticoagulation. In patients with aortic sarcomas we most frequently observed a pedunculated appearance and an atypical location of the filling defect. The F-18 FDG PET(/CT) examinations demonstrated an unequivocal hypermetabolism of the lesion in all cases (4/4). MRI proved lesion vascularization in 5/6 cases. CONCLUSION: Intravascular unilateral or atypically located filling defects of the great vessels with vascular distension, a pedunculated shape and lack of improvement despite effective anticoagulation are suspicious for primary sarcoma on MDCT or MRI. MR perfusion techniques can add information on the nature of the lesion but the findings may be subtle and equivocal. F-18 FDG PET/CT may have a potential role in these patients and may be considered as part of the imaging workup. More... »

PAGES

25

Identifiers

URI

http://scigraph.springernature.com/pub.10.1186/1471-2342-13-25

DOI

http://dx.doi.org/10.1186/1471-2342-13-25

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https://app.dimensions.ai/details/publication/pub.1015047681

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/23924063


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41 schema:description BACKGROUND: To investigate the imaging features of primary sarcomas of the great vessels in CT, MRI and (18)F-FDG PET/CT. METHODS: Thirteen patients with a primary sarcoma of the great vessels were retrospectively evaluated. All available images studies including F-18 FDG PET(/CT) (n = 4), MDCT (n = 12) and MRI (n = 6) were evaluated and indicative image features of this rare tumor entity were identified. RESULTS: The median interval between the first imaging study and the final diagnosis was 11 weeks (0-12 weeks). The most frequently observed imaging findings suggestive of malignant disease in patients with sarcomas of the pulmonary arteries were a large filling defect with vascular distension, unilaterality and a lack of improvement despite effective anticoagulation. In patients with aortic sarcomas we most frequently observed a pedunculated appearance and an atypical location of the filling defect. The F-18 FDG PET(/CT) examinations demonstrated an unequivocal hypermetabolism of the lesion in all cases (4/4). MRI proved lesion vascularization in 5/6 cases. CONCLUSION: Intravascular unilateral or atypically located filling defects of the great vessels with vascular distension, a pedunculated shape and lack of improvement despite effective anticoagulation are suspicious for primary sarcoma on MDCT or MRI. MR perfusion techniques can add information on the nature of the lesion but the findings may be subtle and equivocal. F-18 FDG PET/CT may have a potential role in these patients and may be considered as part of the imaging workup.
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