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Case of the Week 489


What is the most likely diagnosis?

  • 43 year-old in motor vehicle accident 2 months earlier



Close-up of lateral radiograph of chest

  1. Metastatic Lung Carcinoma
  2. Congenital Absence of the Pericardium
  3. Aortic Dissection
  4. Sternoclavicular Dislocation
  5. Sternomanubrial Dislocation

Additional Images-None

 

Additional Images

 

 

None


Answer:

 

5. Sternomanubrial Dislocation

 

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Sternomanubrial Dislocation

General Considerations

  • Rare
  • Usually occurs with high energy impact, such as motor vehicle accidents
  • Can occur with lower impact forces if there is a pre-existing arthropathy, e.g. rheumatoid arthritis or severe kyphosis
  • Joint may be synovial (dislocation most common), synchondral, or synosteal (latter two typically fracture through manubrium without dislocation)

MORE . . .

 


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LearningRadiology.com
is an award-winning educational website aimed primarily at medical students and radiology residents-in-training, containing  lectures, handouts, images, Cases of the Week, archives of cases, quizzes, flashcards of differential diagnoses and “most commons” lists, primarily in the areas of chest, GI, GU cardiac, bone and neuroradiology.