Mediastinal Mass Discovered in 45-Year-Old Patient

A 45-year-old woman presents with an anterior mediastinal mass, and a biopsy is performed. What is your diagnosis?

A 45-year-old woman presents with an anterior mediastinal mass, and a biopsy is performed.

What is your diagnosis?

A. Thymoma

B. Synovial sarcoma

C. Thymic hyperplasia with lymphoepithelial sialadenitis–like features

D. Seminoma

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