Figure 9.

Lymphoma (multiple cases). A. Axial fat suppressed T1 with contrast shows ill-defined intraconal enhancement (arrow), representing infiltrative tumor. B. Parasagittal oblique T1 with contrast in a different patient shows an enhancing mass expanding the superior rectus muscle (arrow). C. Axial T2 in a third patient shows diffuse expansion of the right lacrimal gland, with slightly lobular contour. The mass respects the cortex of the zygoma (white arrow) and molds around the globe without distorting it (blue arrow). D. Axial DWI (same patient as ‘C’) shows very bright signal in both lacrimal glands (yellow arrows), reflecting involvement by hypercellular tumor. Left lacrimal gland disease is better detected with DWI than with conventional images, due to the relatively normal size of the gland and homogeneous appearance.