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Fig 2. A, Midline sagittal T1-weighted image demonstrates the absent optic chiasm (arrow). The remaining midline structures are unremarkable. B, Coronal T2-weighted image at the expected level of the optic chiasm demonstrates the optic nerves (arrows) lateral to the pituitary infundibulum. The optic nerves enter directly into the optic tracts without crossing at the chiasm.
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