Differentiating atypical lipomatous tumors from lipomas with magnetic resonance imaging: a comparison with MDM2 gene amplification status

Autor: Carolin Knebel, Jan Neumann, Benedikt J. Schwaiger, Dimitris C. Karampinos, Daniela Pfeiffer, Katja Specht, Ulrich Lenze, Rüdiger von Eisenhart-Rothe, Ernst J. Rummeny, Klaus Woertler, Alexandra S. Gersing
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: BMC Cancer, Vol 19, Iss 1, Pp 1-8 (2019)
Druh dokumentu: article
ISSN: 1471-2407
DOI: 10.1186/s12885-019-5524-5
Popis: Abstract Background To evaluate the diagnostic value of MR imaging for the differentiation of lipomas and atypical lipomatous tumors (ALT) in comparison with histology and MDM2 amplification status. Methods Patients with well-differentiated lipomatous tumors (n = 113), of which 66 were diagnosed as lipoma (mean age 53 years (range, 13–82); 47% women) and 47 as atypical lipomatous tumor (ALT; mean age 60 years (range, 28–88); 64% women), were included into this study using histology and MDM2 amplification status by fluorescence in situ hybridization (FISH) as standard of reference. Preoperative MR images were retrospectively assessed by two radiologists for the following imaging features: maximum tumor diameter (mm) as well as the affected compartment (intramuscular, intermuscular or subcutaneous), septa (absent, thin ( 2 mm) with nodular components); contrast enhancing areas within the lipomatous tumor ( 1/3 of the tumor volume); Results Of the 47 patients with ALT, 40 (85.1%) presented thick septa (> 2 mm) and this finding significantly increased the likelihood of ALT (OR 6.24, 95% CI 3.36–11.59; P
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