Notes in 03 Extradural lesions

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Published	05/01/2023	Spine Imaging: Extradural Lesionsmost common extradural lesion → {{c1::Degenerative lesions (e.g., osteophytes, herniated discs)}}
Published	05/01/2023	Spine Imaging: Extradural LesionsWhat are the most common extradural neoplasms causing epidural spinal cord compression?- {{c1::carcinoma metastases}}…
Published	05/01/2023	Spine Imaging: Extradural LesionsPrimary extradural tumors are {{c1::rare::common/rare}}
Published	05/01/2023	Spine Imaging: Extradural Lesionsmost common extradural malignancy in adults → {{c1::Metastatic disease}}
Published	05/01/2023	Spine Imaging: Extradural LesionsExtradural Metastases usually involve the {{c1::vertebra::structure}} and extend into the {{c1::epidural space::space…
Published	05/01/2023	Spine Imaging: Extradural LesionsWhat are the most common primary tumors to metastasize to the spinal column/extradural location?- {{c1::Breast (22%)}…
Published	05/01/2023	Spine Imaging: Extradural LesionsIn evaluation of vertebral body marrow replacement, it is essential to use T{{c1::1}}-weighted images
Published	05/01/2023	Spine Imaging: Extradural LesionsBone marrow is {{c1::more::more/less}} {{c2::hyper}}-intense (T{{c2::1}}-weighted) than Intervertebral discs
Published	05/01/2023	Spine Imaging: Extradural Lesions{{c2::Focal::focal/diffuse}} {{c3::decrease::increase/decrease}} in intensity on T{{c3::1}}-weighted images is concer…
Published	05/01/2023	Spine Imaging: Extradural LesionsWhich is a more specific finding, diffuse or focal decreased intensity on T1-weighted images?{{c1::focal}}
Published	05/01/2023	Spine Imaging: Extradural Lesions{{c6::Diffuse::focal/diffuse}} {{c7::decrease::increase/decrease}} in intensity on T{{c7::1}}-weighted images is conc…
Published	05/01/2023	Spine Imaging: Extradural LesionsSpinal lymphoma most commonly involves the {{c1::vertebra::location}} or {{c2::epidural space::location}}
Published	05/01/2023	Spine Imaging: Extradural LesionsSecondary spinal involvement is {{c1::more::more/less}} common than primary bone lymphoma
Published	05/01/2023	Spine Imaging: Extradural LesionsPrimary bone lymphoma is usually in the form of {{c1::non-Hodgkin::hodgkin?}} lymphomas like {{c1::diffuse large…
Published	05/01/2023	Spine Imaging: Extradural LesionsPrimary bone lymphoma lesions are more often {{c1::osteolytic::osteolytic/sclerotic}}
Published	05/01/2023	Spine Imaging: Extradural LesionsLesions of Solitary plasmacytoma of bone are {{c1::lytic::lytic/sclerotic}} and {{c2::expansile::characteristic}…
Published	05/01/2023	Spine Imaging: Extradural LesionsSolitary plasmacytoma of bone is commonly seen in {{c1::late adulthood::demographic}}
Published	05/01/2023	Spine Imaging: Extradural Lesions{{c2::Solitary plasmacytoma of bone}} is a precursor of {{c1::Multiple Myeloma::disease}}
Published	05/01/2023	Spine Imaging: Extradural LesionsSoft tissue lesions seen in Solitary plasmacytoma of bone are called {{c1::solitary extramedullary plasmacytomas}}
Published	05/01/2023	Spine Imaging: Extradural LesionsThe presence of multiple lesions implies the diagnosis of {{c1::multiple myeloma::solitary plasmactoma of bone / mult…
Published	05/01/2023	Spine Imaging: Extradural LesionsAfter diagnosis of plasmacytoma, development of multiple myeloma or abnormal protein electrophoresis m…
Published	05/01/2023	Spine Imaging: Extradural LesionsChordoma is most commonly seen in the {{c1::sacrococcygeal}} region
Published	05/01/2023	Spine Imaging: Extradural LesionsChordoma is less commonly seen in the {{c1::clivus}}, then up to 15% in the {{c1::vertebral bodies (C2 most comm…
Published	05/01/2023	Spine Imaging: Extradural LesionsCan Chordoma present in the vertebral column?{{c1::Yes (sacrococcygeal/cervical vertebrae)}}
Published	05/01/2023	Spine Imaging: Extradural LesionsCan Chondrosarcoma present in the vertebral column?{{c1::Yes (thoracic most common)}}
Published	05/01/2023	Spine Imaging: Extradural LesionsSpinal Chondrosarcoma is most commonly seen in the {{c1::thoracic}} region
Published	05/01/2023	Spine Imaging: Extradural LesionsCan Aneurysmal bone cyst (ABC) present in the vertebral column?{{c1::Yes (posterior elements)}}
Published	05/01/2023	Spine Imaging: Extradural LesionsSpinal Aneurysmal bone cyst (ABC) is most commonly seen in the {{c1::posterior elements}} of the …
Published	05/01/2023	Spine Imaging: Extradural LesionsCan Chondroblastoma present in the vertebral column?{{c1::Yes (vertebral body/posterior elements)}}
Published	05/01/2023	Spine Imaging: Extradural LesionsSpinal chondroblastoma is most commonly seen in the {{c1::body}} and {{c1::posterior element…
Published	05/01/2023	Spine Imaging: Extradural LesionsCan Osteoid osteoma present in the vertebral column?{{c1::Yes (vertebral posterior elements)}}
Published	05/01/2023	Spine Imaging: Extradural LesionsCan Osteosarcoma present in the vertebral column?{{c1::Yes}}
Published	05/01/2023	Spine Imaging: Extradural LesionsVertebral {{c1::hemangiomas}} are {{c2::low::high/low}}-flow vascular malformations, predominantly the {{c2::cavernou…
Published	05/01/2023	Spine Imaging: Extradural Lesionsmost common benign “tumor” of the spine → {{c1::vertebral hemangiomas}}
Published	05/01/2023	Spine Imaging: Extradural LesionsVertebral hemangiomas are usually incidentally found and composed of {{c1::endothelium}}-lined vascular structures
Published	05/01/2023	Spine Imaging: Extradural LesionsVertebral {{c3::hemangiomas}} on sagittal/coronal views show {{c2::striated corduroy}} appearance due to al…
Published	05/01/2023	Spine Imaging: Extradural LesionsVertebral {{c3::hemangiomas}} on axial views show {{c1::stippled}} appearance due to {{c2::thickened}} trab…
Published	05/01/2023	Spine Imaging: Extradural LesionsVertebral hemangioma is typically {{c1::hyper}}-intense on both T1- and T2-weighted images
Published	05/01/2023	Spine Imaging: Extradural LesionsAlthough hemangioma is benign, an aggressive variant is occasionally seen in the {{c1::thoracic spine}}
Published	05/01/2023	Spine Imaging: Extradural LesionsThe aggressive thoracic spine hemangioma variant may have an {{c1::epidural soft tissue}} component that ca…
Published	05/01/2023	Spine Imaging: Extradural LesionsDoes the asymptomatic hemangioma varient have a sex predilection?{{c1::No}}
Published	05/01/2023	Spine Imaging: Extradural LesionsThe aggressive, symptomatic hemangioma varient has a sex predilection for {{c1::females::male/female}}
Published	05/01/2023	Spine Imaging: Extradural LesionsExtradural "masses" within the spinal canal are most likely to represent a {{c1::sequestered disc fragment}}
Published	05/01/2023	Spine Imaging: Extradural LesionsWhich exam can be very helpful to differentiate disc fragment from a tumor?{{c1::contrast-enhanced exam}}
Published	05/01/2023	Spine Imaging: Extradural LesionsOn contrast-enhanced exams, disc fragments are generally {{c1::non-enhancing::enhancing?}}, whereas tumors …
Published	05/01/2023	Spine Imaging: Extradural LesionsCase: Extradural mass in spinal canalYellow arrow: extradural mass posterior to the inferior endplate of a mid-lumbar…
Published	05/01/2023	Spine Imaging: Extradural LesionsSpinal Osteoid Osteoma is most commonly seen in the {{c1::posterior elements}} of the v…
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