Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:[12] At neuroimaging, venous hypertension and cerebral edema caused by straight sinus thrombosis typically result in high signal intensity in the bilateral thalami and basal ganglia.[1,6] In the present case, FLAIR showed characteristic hyperintensity in the bilateral basal ganglia and thalami as mentioned above.
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