PMC8168801_01
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.
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F1
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].
Intraoperative photographs showing (a) resection of the mass, (b) removal of the mass, and (c) the mass fully separated from the patient.
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F2
Intraoperative photographs are presented in [Figure 2].
PMC8168801_02
Preoperative radiographic images of disfiguring ossifying fibroma (Case 2). (a) Anteroposterior view, CT showing disfiguring tumor distorting the right eye. (b) Axial view, CT.
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F3
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].
PMC8168801_03
PMC8168801_04