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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 10 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 10

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

Fig. 10

A 26-year-old female rapidly growing swelling in the lateral aspect of the left orbit, associated with proptosis, headache and dull aching left orbital pain and cervical lymphadenopathy. Axial T1 image A shows hypointense infiltrative mass involving the left lacrimal gland, the left extraconal fat, the lateral bony wall, the left side of skull base, as well as the roof of the left orbit, and has a related left frontal epidural component. Coronal T2 image B shows slightly hyperintense mass displacing the extraconal muscles and the left optic nerve infero-medially. Non-contrast complementary CT study soft tissue window C reveals bone destruction of the left lateral orbital wall, left orbital roof, and lesser wing of sphenoid bone (green arrows). Sagittal T1 post-contrast image D shows mild enhancement of the left orbital mass. Evident diffusion restriction on DWI (b1000)/ADC (E, F). The ADC value of 0.52 × 10−3mm2/sec. Pathologically proved left orbital extraconal infiltrative lymphoma

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