PMC9829804_01
Coronal CT showed heterogeneous enhancement in multiple patchy areas within the lesion.
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It appeared attached to both the lateral and medial nasal walls with mild deviation of the nasal septum and no bone erosions (Fig. 1).
MRI T1 revealed a hypointense lesion on the non-contrast T1 image.
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T1 image and heterogeneously hyperintense lesions with multiple flow voids in the T2 image. The mass showed inhomogeneous enhancement, particularly at the periphery, after contrast administration (Fig. 2, Fig. 3).
Angiography revealed a hypervascularized left nasal cavity mass with 70-80 % of its supply from the anterior ethmoidal artery branches.
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Angiography revealed a hypervascularized left nasal cavity mass with 70-80 % of its supply from the anterior ethmoidal artery branches bilaterally and the rest from the internal maxillary artery (Fig. 4).
Mass after excision.
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Based on these radiological findings, endoscopic surgical excision preceded by pre-operative embolization was performed (Fig. 5).