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Fig. 6 | Insights into Imaging

Fig. 6

From: Imaging of skull vault tumors in adults

Fig. 6

Aneurysmal bone cyst (ABC). Case 1 (a–c): Primary ABC: NECT (a), T2WI (b), and post-contrast T1WI (c) show an extremely expansile, lytic, multiloculated, septated lesion, with severe cortical thinning (arrowhead in a), fluid-fluid levels (dashed arrow in b), and lineal enhancement (arrows in c). Case 2 (d–f): Fibrous dysplasia with secondary ABC: NECT demonstrates an expansile, lytic lesion with severe cortical thinning (arrowhead in d), a characteristic fluid-fluid level (arrow in f), and associated areas of “ground-glass” matrix (dashed arrows in e)

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