DDx
Differential Diagnoses
Media Gallery
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Composite CT scan, MRI, and angiogram of a symptomatic ossifying fibroma with extensive involvement of the skull base in a 12-year-old girl whose primary symptom was exophthalmos and loss of vision bilaterally.
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Lateral skull radiograph of a 73-year-old patient with a slow-growing, nontender skull lesion. Note the typical honeycomb appearance.
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Head CT scan of a 73-year-old patient with a slow-growing, nontender skull lesion shows a well-defined nonenhancing lytic lesion with calcification and honeycomb appearance.
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Sagittal magnetic resonance imaging (MRI) section of the brain of a 73-year-old patient with a slow-growing, nontender skull lesion showing a nonenhancing soft tissue mass. This lesion proved to be a hemangioma.
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Lateral skull radiograph of a 17-year-old adolescent male with a painless slow-growing mass. The single round lytic lesion was found to be an epidermoid.
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Fibrous dysplasia involving the sphenoid sinus and pterygoid plates as well as the sella. This is an asymptomatic lesion; observation was recommended.
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Head CT scan of a 78-year-old woman with Paget disease. Note the cotton wool appearance of the lesion, with varying degrees of bone formation and no clear edges. Observation was recommended.
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A well-preserved 90-year-old female patient with a mass in the occiput with an inability to sleep and rapid atrial fibrillation related to hyperthyroidism due to a solitary thyroid metastasis. This sagittal CT scan demonstrates a lytic lesion.
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Same patient as above with mixed attenuation calvarial and epidural mass on MRI; lesion was resected.
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A 49-year-old male patient with occipital headache and no deficits. A CT scan demonstrates an expansile lesion involving the diploe. This was demonstrated to be a dermoid tumor at histopathology.
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Same patient as above with an expansile lesion involving the diploe on MRI.
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A 56-year-old female patient with a small bump on her forehead which slowly increased in size over a 5-year period. A CT scan revealed a lesion which was resected with endoscopic assistance so the incision would be in the hairline. Histopathological examination confirmed an osteoid osteoma.
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Axial and coronal CT scan images of a 40-year-old female patient with progressive visual decline in the left eye for >2 years. Patient was blind at presentation. A cranial resection was done with resulting return of light perception. Histopathological examination confirmed an intraosseous meningioma.
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Coronal T1 and axial T2 images for same patient as above.
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MRI images of a 40-year-old patient with a visual field defect in the left temporal (Ollier disease). Both lesions were resected and shown to be osteochondromas on histopathological examination.
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CT scan images for same patient as above.
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Axial and coronal T1 MRI images of a 65-year-old patient with a chronically large jaw who presented with h/a and left visual worsening due to fibrous dysplasia. Transnasal surgery combined with an eyelid approach was completed to open up the frontal sinus ostium and decompress the orbit.
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Coronal and sagittal CT bone window images of same patient as above.
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