PMC5385774_01
Plain radiograph skull anteroposterior (A) and lateral view (B) revealed well-defined, rounded, homogeneous radiopaque lesion within right frontal sinus with air fluid level overlying frontal bone on the right side
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Plain radiograph skull posteroanterior and lateral view [Figure 1A and B] revealed well-defined, homogeneous lobulated radio-opaque lesion within the right frontal sinus.
Non-enhanced computed tomography of the head (ICT 256 SLICE PHILIPS BRILLIANCE) soft tissue window revealed homogeneous bony mass within right frontal sinus (A) with associated extra axial pneumocephalus with air fluid level (B)
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Non-enhanced computed tomography [Figure 2A and B] of the head revealed well-defined lobulated, homogeneous bone density mass lesion (approximate 2.4 x 2.6 x 3.2 cm in size), with no discernible medullary cavity within the right frontal sinus.
Non-enhanced computed tomography of the head (ICT 256 SLICE PHILIPS BRILLIANCE) (Bone window) axial (A) and coronal (B) images revealed homogeneous bony mass within right frontal sinus with intracranial extradural extension and associated pneumocephalus
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The lesion was arising from the posterosuperior wall of the right frontal sinus [Figure 3A and B].
Magnetic resonance imaging of the brain (PHILIPS 1.5T) axial images reveals extra axial pneumocephalus with air fluid level appears hypointense on T1 weighted images (A), and osseous mass showing blooming on fast field echo (B)
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There was blooming on fast field echo sequences [Figure 4B].
Magnetic resonance imaging of the brain T2 weighted coronal (A) demonstrating subcortical white matter edema in the right frontal lobe and sagittal T1 weighted post-contrast image (B) reveals isointense osseous lesion in right frontal sinus with associated pneumocephalus with air fluid level without any peripheral enhancement and mass effect on right frontal and high parietal lobe with surrounding edema
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