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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 8 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 8

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

Fig. 8

A 59-year-old female with right-sided dull aching orbital pain and limited right orbital movement. Axial T1 image A shows T1 hypointense infiltrative right retrobulbar intraconal mass involving the right medial rectus muscle, the related intraconal fat planes and inseparable from the optic nerve. Coronal T2 image B shows isointense signal of the lesion. Coronal T1 post-contrast image C reveals homogeneous enhancement of the retrobulbar lesion with possible invasion of the orbital roof. Axial T1 post-contrast image D shows similar infiltrative submucosal mass seen in the left maxillary sinus. Evident diffusion restriction on DWI (b1000)/ADC (E, F). The ADC value of 0.46 × 10−3mm2/sec. E Pathologically proved right-sided retrobulbar lymphoma (NHL) partially encasing the left optic nerve

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