fig25

Figure 25. NUT carcinoma. (A) Coronal CT image of the paranasal sinuses in a patient with NUT carcinoma shows a lesion centered in the right nasal cavity with soft-tissue attenuation and aggressive features, including both bone erosion and hyperostosis; (B) Coronal T2-weighted image shows the tumor as isointense relative to gray matter (red arrow). The adjacent maxillary sinus exhibits a hyperintense signal consistent with trapped secretions (yellow arrow); (C) Coronal post-contrast T1-weighted image shows tumor enhancement with a central non-enhancing component reflecting necrosis (red arrow). The right maxillary sinus demonstrates peripheral enhancing mucosa, consistent with an inflammatory process and trapped secretions (yellow arrow). NUT: Nuclear protein of the testis; CT: computed tomography.