Sinonasal Schwannoma with New Bone Formation Expressing Bone Morphogenic Protein
Figure 1
Horizontal (a) and axial (b) enhanced computed tomography (CT) showed an inhomogeneously enhancing mass that filled the left nasal cavity. A low-density lesion with metal-dense spots in the left maxillary sinus, indicating mycetoma, was also observed. Bone window images ((c), (d)) also showed a new bone formation in the tumor. Black arrows indicate a new bone formation.
