Radiology Notes

My notes during radiology residency, fellowship, and beyond…

Archive for the ‘spine’ Category

Disc Disease Nomenclature

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Divide axial disc into 4 quadrants of 25%:

Focal Herniation = <25% [pic] (protusion type or extrusion type) [pic]

Broad based Herniation = 25-50% [pic]

Bulge = >50% normal disc circumference.

Symmetric Disc Bulging = 100% [pic]

Link

Written by lmwong

January 5, 2011 at 4:00 pm

Posted in classification, neuro, spine

Vertebra Plana MELTs

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  • Metastasis, myeloma
  • Eosinophilic granuloma
  • Lymphoma
  • Trauma / TB

Written by lmwong

March 22, 2010 at 8:22 pm

Posted in bone, differential, msk, neuro, spine

Intramedullary Spinal Mass

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  • astrocytoma (MC)
  • ependymoma
  • hemangioblastoma
  • metastasis
  • MS or ADEM

Written by lmwong

February 12, 2010 at 8:46 pm

Posted in differential, neuro, spine

Scalloped Posterior Vertebral Bodies

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  • Hydrocephalus
  • Hurlers
  • Ankylosing Spondylitis
  • Achondroplasia
  • Acromegaly
  • NF-1

read more

Written by lmwong

January 23, 2010 at 8:15 pm

Posted in differential, neuro, spine

Epidural Abscess

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Brain

  • extension from sinuses or mastoid air cells
  • front sinus MC
  • post craniotomy and meningitis
  • extraaxial fluid collection (hypodense CT, high T2); dural contrast enhancement
  • venous thrombosis and infarction

Spine

  • discitis
  • contrast enhancement
  • narrows spinal canal

Written by lmwong

January 22, 2010 at 8:01 pm

Posted in abscess, neuro, spine

LIgamentous Ossification of Spine Differential

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  • DISH
  • Ankylosing Spondylitis
  • Severe spondylosis
  • Vitamin A toxicity
  • Fluorosis

Written by lmwong

January 21, 2010 at 7:47 pm

Posted in bone, differential, msk, spine

Ankylosing Spondylitis

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  • HLA-B27 positive
  • M>F
  • adolescents
  • findings
    • bilateral SI erosion –> ankylosing
    • bamboo spine
    • large central joints > small peripheral
  • SI findings similar in spondylitis of inflammatory bowel (UC > Crohn’s and Whipple’s)

    Written by lmwong

    January 21, 2010 at 7:45 pm

    Posted in arthritis, bone, msk, pelvic, pelvis, spine

    DISH

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    • diffuse idiopathic skeletal hyperostosis
    • Forestier’s disease
    • ossification of spinal soft tissues (ALL, annulus fibrosis, paravertebral soft tissue)
    • disk spaces preserved
    • leads to spine immobility; fractures
    • most common at T spine
    • DDx: retinoid arthropathy, fluorosis

    read more

    Written by lmwong

    January 20, 2010 at 11:06 am

    Posted in bone, msk, neuro, spine

    Neurogenic Tumors

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    • posterior mediastinal mass
    • peripheral nerves = widen neural foramina
      • schwannoma (horizontal orientation)
      • neurofibroma
    • sympathetic chain = vertebral body erosion; calcifications
      • ganglioneuroma (vertical orientation)
      • ganglioblastoma
      • neuroblastoma
    • paraganglia
      • pheochromocytoma
      • chemodectoma
    • 70% benign
    • 4th decade of life
    • incidentally detected; radicular pain
    • rib spreading and rib erosion
    • homogenous = benign
    • heterogenous = malignant
    • get MRI

    Written by lmwong

    January 12, 2010 at 4:15 am

    Posted in chest, mediastinal, neuro, spine

    3 Remnants of Notocord

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    • Chordoma
    • Thornwaldt’s cyst
    • Schmorls node/limbus vertebra

    Written by lmwong

    December 19, 2009 at 2:09 am

    Posted in bone, msk, Phalen, spine

    L-spine Plain Film Dictation

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    Indication: [x]
    Technique: [x] views of the lumbosacral spine.
    Comparison: [x]
    Findings: The vertebral body and disc space heights are preserved. The spinal alignment is maintained without evidence of spondylolithesis. No acute fracture is identified. No lytic or blastic lesions are seen. The SI joints are unremarkable.
    Impression: Unremarkable examination of the lumbosacral spine.

    Written by lmwong

    April 7, 2008 at 4:24 am

    T-spine Plain Film Dictation

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    Indication: [x]
    Technique: [x] views of the thoracic spine.
    Comparison: [x]
    Findings: The vertebral body and disc space heights are preserved. The spinal alignment is maintained without evidence of spondylolithesis. No acute fracture is identified. No lytic or blastic lesions are seen.
    Impression: Unremarkable examination of the thoracic spine.

    Written by lmwong

    April 7, 2008 at 4:23 am

    C-Spine Plain Film Dictation

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    Indication: [x]
    Technique: [x] views of the cervical spine.
    Comparison: [x]
    Findings: The cervical spine is visualized from C1-C7. No prevertebral soft tissue swelling is seen. The cervical alignment is maintained without spondylolithesis. No acute fracture is identified. The vertebral body and disc space heights are preserved. The odontoid process is intact.
    Impression: Unremarkable examination of the cervical spine.

    Written by lmwong

    April 7, 2008 at 4:22 am