Orthopedics > OCOSH Classification > Investigations > Radiology - General > Radiology - Signs

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Signs and features in orthopaedic and related musculoskeletal radiology
[OCOSH Code: D011871 365853002 INV_RAD_S]

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Schmorl node CHORUS

Location: http://chorus.rad.mcw.edu/doc/01016.html

Member Ratings: 10 out of 10 stars (1 vote)

chondrification defects where periosteal vessels penetrate cartilage plates of disc
* Xray:
o concave defects at upper and lower vertebral endplates with sharp margins produced by herniation of disc material
* MRI:
o...
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absent nasal septum

Location: http://chorus.rad.mcw.edu/doc/00582.html

absent nasal septum

* cocaine
* Wegener's (midline lethal granuloma)
* surgery
* trauma
* syphilis
* sarcoid
Charles E. Kahn, Jr., MD - 2 February 1995
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anterior vertebral scalloping CHORUS

Location: http://chorus.rad.mcw.edu/doc/01030.html

anterior vertebral scalloping
* Hodgkin's disease
* aortic aneurysm
* tuberculosis of the spine
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basilar invagination CHORUS

Location: http://chorus.rad.mcw.edu/doc/00614.html

dens projects into base of skull
o McGregor's line> 4.5 mm
o Chamberlain's line> 3 mm
* may --> obstructive hydrocephalus
etiology:
* 1' anomalies...
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bone scan - falsely negative metastases CHORUS

Location: http://chorus.rad.mcw.edu/doc/01108.html

* anaplastic tumors
* reticulum cell sarcoma
* renal cell Ca
* thyroid Ca
* histiocytosis
* neuroblastoma
* multiple myeloma (positive scan usually due to recent or...
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bone within a bone CHORUS

Location: http://chorus.rad.mcw.edu/doc/01060.html

mnemonic "STOP heavy metal"
* S: sickle cell disease
* T: Thorotrast
* O: osteopetrosis
* P: Paget's disease
* heavy metals
* hypervitaminosis D
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brachydactyly CHORUS

Location: http://chorus.rad.mcw.edu/doc/01023.html

excessively shortened tubular bones in hands and feet
* During the period of bone growth, the hallmark is "cone epiphysis," the apex of which protrudes into the adjacent metaphysis. Epiphyses close prematurely leading to short, broad tubular bones.
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bubbly bone lesion CHORUS

Location: http://chorus.rad.mcw.edu/doc/00538.html

Multiple radiolucencies
* fibrous dysplasia
* enchondroma
* giant cell tumor (GCT)
* non-ossifying fibroma
* osteoblastoma
* myeloma
* aneurysmal bone cyst (ABC)
* angioma
...
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calcium hydroxy apatite CHORUS

Location: http://chorus.rad.mcw.edu/doc/00616.html

* all calcification in soft tissues is hydroxyapatite
* except cartilage (chondrocalcinosis): calcium pyrophosphate
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celery stalk metaphyses CHORUS

Location: http://chorus.rad.mcw.edu/doc/00652.html

irregularity of metaphyses
* primarily of long bones
d/t congenital infection (ToRCHS)
* esp. rubella
DDx: osteopathia striata (Voerhaave syndrome)
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