case_images: PMC8168801_01
case_images: Preoperative radiographic images of disfiguring osteosarcoma tumor mass (Case 1). (a) Sagittal view, T1-weighted MRI showing disfiguring tumor obstructing the left eye. (b) Posteroanterior view, CT. (c and d) Axial view, T2-weighted MRI showing well-defined enhancing nodules within the mass. (e) Axial view, CT. (f) Axial view, T1-weighted MRI showing displacement of brain parenchyma.
case_images: SNI-12-175-g001.jpg
case_images: PMC8168801_01_SNI-12-175-g001.jpg
case_images: F1
case_images: Computed tomography (CT) and magnetic resonance imaging (MRI) revealed a 24 cm x 20 cm x 18 cm extra-axial mass centered in the region of the left frontal bone [Figure 1].
case_images: Intraoperative photographs showing (a) resection of the mass, (b) removal of the mass, and (c) the mass fully separated from the patient.
case_images: SNI-12-175-g002.jpg
case_images: PMC8168801_01_SNI-12-175-g002.jpg
case_images: F2
case_images: Intraoperative photographs are presented in [Figure 2].
case_images: PMC8168801_02
case_images: Preoperative radiographic images of disfiguring ossifying fibroma (Case 2). (a) Anteroposterior view, CT showing disfiguring tumor distorting the right eye. (b) Axial view, CT.
case_images: SNI-12-175-g003.jpg
case_images: PMC8168801_02_SNI-12-175-g003.jpg
case_images: F3
case_images: Diagnostic angiography, CT, and MRI revealed a giant, moderately hypervascular, multilobulated, and peripherally calcified expansile mass lesion which appeared to arise from the skull base and occupy the entire nasal cavity, maxillary sinus, and ethmoid sinus regions [Figure 3].
case_images: PMC8168801_03
case_images: PMC8168801_04