Radiology Notes

My notes during radiology residency, fellowship, and beyond…

Archive for January 17th, 2010

Venous Branches

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link

Written by lmwong

January 17, 2010 at 10:06 am

Posted in Uncategorized

Arterial Branches

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link

Written by lmwong

January 17, 2010 at 10:03 am

Posted in Uncategorized

Duodenal Ulcer

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  • 2-3 times more common than stomach ulcers
  • M>F
  • increased secretion of acid
  • high incidence of H pylori, stress, smoking, caffeine, corticosteroid use
  • fixed outpouching of barium that does not change shape
  • most along anterior surface of duodenal bulb
    • only 1 in 20 occur beyond bulb
    • think Zollinger-Ellison syndrome or malignant ulcer
  • narrowing of distal and proximal duodenum
  • complications: perforation, bleeding, obstruction, penetration
  • multiple = Zollinger-Ellison syndrome
  • clover-leaf barium collection = scar from old ulcer; should change in shape
  • two pyloric channels; fistula connects stomach to duodenum through peptic ulcer

Written by lmwong

January 17, 2010 at 9:32 am

Posted in abdomen, gi, small bowel

Emphysematous Gastritis

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  • gas within stomach wall
  • causes
    • gas forming organisms: e coli, clostridium perfringens
    • gastric obstruction with increased pressure
    • severe vomiting
    • ischemia
    • infection
    • corrosive ingestion
  • corticosteroid use risk factor

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Written by lmwong

January 17, 2010 at 8:58 am

Posted in abdomen, gi, stomach

Postoperative Stomach Differential

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  • Marginal Ulcer
  • Afferent loop syndrome
  • Blown duodenal stump
  • Jejunogastric intussusception
  • Gastric remnant bezoar
  • Postgastrectomy carcinoma
  • Bile reflux gastritis

Written by lmwong

January 17, 2010 at 8:46 am

Congenital Hip Dysplasia

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  • US
    • superolateral displacement of hip relative to acetabulum
    • axial and coronal views
    • measure alpha angle, normal is >60 degress
    • stress maneuvers: abnormal posterior and superior subluxation
  • risk factors
    • family history
    • breech presentation
    • torticollis
    • foot and knee deformity
    • neuromuscular disease (myelodysplasia and arthrogryposis
  • F>M, L>R
  • screening exam at 4-6 weeks

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Written by lmwong

January 17, 2010 at 8:28 am

Small Bowel Surgery Diagrams

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From AJR article.

Whipple Procedure (Pancreaticoduodenectomy)

Puestow Procedure

Roux-en-Y Procedure

Biliopancreatic Diversion

Written by lmwong

January 17, 2010 at 2:02 am

Posted in abdomen, gi, small bowel