Image Challenge – April 6

Question: List 4 entities that would be included in the differential diagnosis for the following chest x-ray.

Answer: This chest x-ray shows an anterior mediastinal mass. Four classic entities that should be included in the differential diagnosis can be remembered as the 4 Ts:

  1. Thymoma
  2. Terrible lymphoma
  3. Thyroid (enlarged or ectopic)
  4. Teratoma

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