Radiology Notes

My notes during radiology residency, fellowship, and beyond…

Archive for April 2008

Stomach Narrowing Differential

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Benign

  • peptic scarring
  • corrosive ingestion
  • granulomatous disease (Crohn disease, sarcoidosis, tuberculosis, syphilis, eosinophilic gastroenteritis)

Malignant

  • Scirrhous adenocarcinoma
  • metastases
  • Lymphoma
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Written by lmwong

April 30, 2008 at 2:00 pm

Stomach Filling Defects Differential

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Benign Tumors

  • Polyp
  • GIST
  • Lipoma

Malignant Tumors

  • Adenocarcinoma
  • Malignant GIST
  • Metastases
  • Lymphoma

Nonneoplastic

  • ectopic pancreatic rest
  • Bezoar
  • Fundoplication defect
  • Varices

Written by lmwong

April 30, 2008 at 1:58 pm

Stomach Ulcer Lesions Differential

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Nonneoplastic

  • Superficial gastric erosion
  • peptic or medication-induced ulcers

Tumors

  • adenocarcinoma
  • Gastrointestinal stromal tumor
  • lymphoma
  • metastases

Written by lmwong

April 30, 2008 at 1:56 pm

Thickened Stomach Folds

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Benign

  • Gastritis (H pylori)
  • Peptic ulcer disease
  • Zollinger-Ellison syndrome
  • Menetrier disease
  • Varcies

Malignant

  • Lymphoma
  • Carcinoma
  • Metastases

Written by lmwong

April 30, 2008 at 1:55 pm

Bright on T1

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  • Blood
  • Fat
  • Protein
  • Melanin
  • Contrast

Written by lmwong

April 29, 2008 at 2:51 am

Posted in differential, mri

Mediastinal Lymphadenopathy

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  • middle mediastinal mass
  • short axis, greater than 1 cm

Differential:

  • Malignancy: lung, lymphoma, leukemia, Kaposi, head and neck, GU, breast, melanoma
  • Infection: pneumonia, TB, fungal, viral
  • Sarcoidosis: bilateral and symmetric
  • Castleman’s disease
  • Angioimmunoblastic lymphadenopathy: enhance with contrast

see ATS nodal stations.

Written by lmwong

April 29, 2008 at 2:40 am

Kienbock’s Disease

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  • lunatomalacia
  • avascular necrosis of lunate
  • associated with negative ulnar variance, 75%
  • sclerotic and irregular shape of lunate on plain film
  • low signal on T1, low signal on GRE MR

Written by lmwong

April 28, 2008 at 3:32 am

Posted in bone, msk, wrist