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Fig. 14 | Insights into Imaging

Fig. 14

From: Multimodality imaging of renal lymphoma and its mimics

Fig. 14

Erdheim–Chester disease. Axial noncontrast CT (a) demonstrates bilateral perinephric soft tissue stranding/infiltration mimicking the perinephric infiltrative appearance of lymphoma. F18-FDG PET/CT images (b, c) demonstrate the low-grade metabolic activity associated with soft tissue stranding. Note the normal course of the bilateral ureters (arrows). The patient was also found to have thoracic periaortic soft tissue thickening and bilateral metadiaphyseal sclerosis which are additional features of Erdheim–Chester disease

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