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Insights into Imaging
Fig. 5 | Insights into Imaging

Fig. 5

From: MRI of diffuse-type tenosynovial giant cell tumour in the knee: a guide for diagnosis and treatment response assessment

Fig. 5

Differential diagnosis: synovial chondromatosis in the knee. a Lateral radiograph illustrating multiple punctiform masses in the soft tissues of the knee containing speckled calcifications (arrows). These calcifications are present in Hoffa and posterior in the knee. b Sagittal T1 SPIR post contrast showing rim enhancement of the synovial lesions, which contain low signal intensity foci corresponding to the calcifications on X-ray. Only minimal joint effusion is present surrounding the cruciate ligaments with rim enhancement. c Axial T2 DIXON shows posterior extracapsular extension into the lateral head of gastrocnemius muscle (arrow)

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