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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 5 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 5

From: Value of diffusion-weighted magnetic resonance imaging (DWI) in differentiating orbital lymphoma from idiopathic orbital inflammatory pseudotumor

Fig. 5

A 23-year-old male patient with acute rhino-sinusitis presented with left-sided orbital pain, mild proptosis and limited orbital gaze. Coronal T1 A shows diffusely enlarged left superior, medial and lateral recti with mild stranding of the left retrobulbar fat. Coronal and sagittal T1 fat-sat post-contrast images B, C show homogeneous enhancement of these left orbital muscles. Axial non-contrast CT image bone window D reveals ethmoidal and sphenoidal mild sinusitis. No diffusion-weighted restriction seen on DWI (b500) E and ADC F. The ADC value is 1.05 × 10−3 mm2/sec. Left-sided orbital inflammatory pseudotumor, Myositic type; responded well 2 weeks after therapeutic trial with corticosteroids

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