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Images in a 66-year-old female with OP of the left maxillary sinus (a) Axial CT image shows a well-demarcated and lobulated mass arising from the medial wall of left maxillary sinus without bony hyperostosis. (b) and (c), The focus is of heterogeneously grape-like high signal (★) on axial T1- and isointense signal on T2 weighted MR images. (d) The focus exhibits a typical “cerebriform” sign on axial fat-suppressed contrast-enhanced MR image (*).
