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Case of the Week 616


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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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.