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Insights into Imaging
Fig. 18 | Insights into Imaging

Fig. 18

From: Diagnostic methods and therapeutic options of uveal melanoma with emphasis on MR imaging—Part I: MR imaging with pathologic correlation and technical considerations

Fig. 18

A 70-year-old man with serous choroidal detachment and hemorrhagic retinal detachment due to a large lobulated pigmented choroidal melanoma along the medial and inferior aspect of the right eye. Axial (a) T2-weighted turbo spin-echo STIR and (b) fat-suppressed T1-weighted images, (c) coronal and (d) axial contrast-enhanced fat-suppressed T1-weighted images. The intraocular mass along the medial and inferior aspect of the globe exhibits low signal intensity on T2-weighted image (white arrow in a), high signal intensity on T1-weighted image (white arrow in b) and mild enhancement after contrast agent administration (white arrows in c and d). Along the supero-lateral aspect of the eyeball, the localized serous choroidal detachment, with its well-defined lentiform shape, is hyperintense on T2-weighted (black asterisk in a) and hypointense on T1-weighted images (white asterisk in b); the detached choroid is easily appreciable after contrast agent administration (white arrowheads in c and d) because of its enhancement. The coexisting hemorrhagic retinal detachment demonstrates low signal intensity on T2-weighted image (white dotted arrow in a), high signal intensity on T1-weighted image (white dotted arrow in b) and does not enhance after contrast agent administration (white dotted arrow in d). The lens is displaced anteriorly (white curved arrow in a). e Histological examination: low magnification showing a pigmented uveal melanoma (below) and the coexisting choroidal detachment (on the left) (H&E, original magnification ×25)

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