CTICasesAggressive Mediastinal Mixed Germ Cell Tumor with Sarcomatous Differentiation (Case 1)
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Imaging findings
A 26-year-old male presented with a large, ugly anterior mediastinal mass with calcification. There was associated volume loss and elevation of the hemidiaphragms, suggesting phrenic nerve involvement. Contralateral lung metastases were present, indicating malignancy.
Key takeaways
This aggressive anterior mediastinal mass, with its size, calcification, and metastases, suggested a germ cell tumor. Pathology confirmed a mixed germ cell tumor with sarcomatous differentiation. This sarcomatous transformation can lead to a very aggressive course with poor response to chemotherapy. The 'ugly' appearance and rapid progression are characteristic of this rare and deadly subtype.
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