An Unusual Cause of Visual Loss: Involvement of Bilateral Lateral Geniculate Bodies
Pierre R. Lefèbvrea,
Monique Cordonniera,
Danielle Balériauxb and
Didier Chamartc
a Department of Ophthalmology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
b Department of Neuroradiology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
c Department of Internal Medicine, Institut Médico-Chirurgical d’Ath, Ath, Belgium
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FIG 1. Coronal FLAIR image obtained 1 day after the acute onset of anaphylactic shock symptoms, showing bilateral hyperintense areas symmetrically located within the lateral geniculate bodies and extending laterally within the white matter of the parahippocampal regions.
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FIG 2. Coronal Gd-enhanced T1WI obtained at day 6. Enhancement within both geniculate bodies extending to the superior parahippocampal regions is clearly visible.
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FIG 3. Control MR images obtained 16 days after onset of symptoms.
A, Coronal T1WI, in which the geniculate bodies appear hyperintense.
B, Coronal FLAIR image, in which lesions are still visible but the extent and intensity of the abnormal high signal intensity are decreased.
C, Coronal Gd-enhanced T1WI, in which mild contrast uptake is still evident.
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FIG 4. Coronal gradient echo T2WI obtained at day 16, demonstrating small hypointense areas in both geniculate bodies corresponding to hemosiderin deposits.
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FIG 5. Follow-up MR images obtained at day 51.
A, Coronal T1WI, in which lesions are very discreetly hyperintense.
B, Normal FLAIR image.
C, Gd-enhanced T1WI, in which the lesions are still visible but are reduced in size and contrast uptake is mild.
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