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. 2023 Oct 6;42(3):217–234. doi: 10.1007/s11604-023-01497-w

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© The Author(s) 2023

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Fig. 13 — Thymic squamous cell carcinoma. A 60-year-old woman with thymic squamous cell carcinoma. a On contrast enhanced chest CT, a 4.4-cm mass with small calcification shows heterogeneous enhancement (arrow) b The mass shows low intensity on T2WI (arrow). c The mass shows heterogeneous intensity on contrast-enhanced T1WI. d, e The mass shows a low ADC value (1.1 × 10^–3 mm²/s) (arrow). f 18F-FDG PET shows high FDG uptake in the perivascular mass (SUVmax = 10.1) (arrow). g The pathological diagnosis is thymic squamous cell carcinoma (HE staining, medium-power image). The low signal intensity area in the thymic mass on T2WI indicates collagenous tissue and fibrosis pathologically. CT, computed tomography; T2WI, T2-weighted imaging; T1WI, T1-weighted imaging; ADC, apparent diffusion coefficient; 18F-FDG PET, 18F-fluorodeoxyglucose positron emission tomography; SUVmax, maximum standardized uptake value; HE, hematoxylin and eosin