Fig. 1
From: Clinicopathological analysis of rosette-forming glioneuronal tumors
Head MRI: A-C, In case 2, the fourth ventricle was enlarged, containing an irregular tumor with an abnormal signal. The tumor displayed mixed medium and low signals on T1WI, with mixed high signals on T2WI. The lesion center appeared as an isointense signal. Contrast-enhanced scanning revealed significant enhancement within the substantial region of the lesion, and slight cystic changes were observed; D-F, In case 4, a round space-occupying lesion was identified in the brainstem. T1WI revealed an uneven low signal, and T2WI displayed an uneven high signal. Multiple small cystic changes were observed at the edge of the lesion. On plain scanning, the lesion border was unclear, and mild edema was present. Following enhanced scanning, the lesion demonstrated an uneven enhancement, with the cystic part unenhanced and the lesion border clearer