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Case of the Week 469



What is the most likely diagnosis?

  • 23 year-old female with retrosternal discomfort



Contrast-enhanced Axial CT of Chest

  1. Lymphoma
  2. Teratoma
  3. Aortic dissection
  4. Pulmonary embolism
  5. Osteoblastic metastases

Additional Images - Coronal Reformatted CT Scan of Chest

 

Additional Images

 

Coronal Reformatted CT Scan of Chest


Answer:

 

2. Teratoma

 

More (Click Discussion Tab)

 

 

Teratoma

General Considerations

  • Mediastinum is a rare site for occurrence of teratomas, most being ovarian in origin
  • Arise from primitive germ cell rests
    • Supposed to migrate along urogenital ridge to primitive gonad
    • Journey is interrupted in the mediastinum
  • May be solid or cystic
    • Most are cystic

 

MORE . . .

 


.

This Week
23 year-old female with retrosternal discomfort
 
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Some of the fundamentals of interpreting chest images
 
The top diagnostic imaging diagnoses that all medical students should recognize according to the Alliance of Medical Student Educators in Radiology
 
Recognizing normal and  key abnormal intestinal gas patterns, free air and abdominal calcifications
 
Recognizing the parameters that define a good chest x-ray; avoiding common pitfalls
 
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LearningRadiology
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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.