Radiology Notes

My notes during radiology residency, fellowship, and beyond…

Etat Crible

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  • dilatation of perivascular spaces around cerebral arterioles in the basal ganglia of elderly people
  • associated with vascular parkinsonism

link
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Written by lmwong

April 12, 2012 at 8:13 am

Posted in neuro

MRI Hand and Wrist anatomy link

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A nice PDF link to an old radiographics article diagraming MRI hand and wrist anatomy in a concise fashion: http://radiographics.rsna.org/content/8/6/1171.full.pdf

Written by lmwong

April 9, 2012 at 4:03 pm

Posted in hand, mri, msk, wrist

Persistent fetal origin of PCA

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The best picture of persistent fetal origin of the PCA I can find on the net…

  • PCA originates from ICA, rather than basilar artery
  • 15% of people

Written by lmwong

April 9, 2012 at 8:45 am

Posted in carotid, neuro

Categories and Causes of Hydrocephalus

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Pediatric specific causes of hydrocephalus…

Written by lmwong

March 25, 2012 at 10:48 am

Pituitary Hyperplasia

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  • convex superior margin of pituitary
  • upper limits of normal CC dimension
    • lactating women: 12 mm
    • menstruating women: 10 mm
    • males/postmenopause: 8 mm
    • infants: 6 mm
  • DDx: Turner, Klinefilters, hypothyroidis, Addison, end-organ failure.
Source: StatDX
Link: http://www.ajnr.org/content/18/3/551.full.pdf
Link: http://radiology.rsna.org/content/213/2/383.full
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Written by lmwong

November 3, 2011 at 2:31 pm

Posted in neuro, upper

Wilm’s Tumor

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  • Age: 80% <6yo; most common abdominal neoplasm 1-8 yo.
  • Appearance: solid mass in kidney (claw sign), pushing away vessels, not crossing mid-line
  • IVC and renal vein thrombosis
  • Mets to lung, liver, brain, bone
  • Staging
    • I = confined to kidney
    • II = local extension to perinephric space
    • III = lymph nodes
    • IV = distant mets
    • V = bilateral renal
  • DDx: neuroblastoma (crosses mid-line, encases vessels, calcify), multilocular cystic nephroma, sarcoma, RCC, nephroblastomatosis, mesoblastic nephroma, AML, renal medullary carcinoma

 

Written by lmwong

October 28, 2011 at 1:17 pm

Posted in abdomen, GU, pediatrics, renal

Sites of Metastasis

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Nice graphic of where primaries metastasize: link

Written by lmwong

October 28, 2011 at 9:54 am

Posted in cancer, metastasis