Department of Pathology, University of Oklahoma Health Sciences Center
A 18 year-old Man with a Large Mediastinal Mass
Additional information: A surgery was performed and yielded a 9.5 x 6.5 x 5.5 cm encapsulated mass with attached soft tissue that appeared to be thymic tissue on subsequent microscopic examination. The mass had a gray-yellow, solid cut surface with multifocal hemorrhage and necrosis. The capsule was largely intact with no macroscopic evidence of penetration identified. The following pictures are taken from the surgical specimens.
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PAS: Periodic acid Schiff reaction.
What is your working diagnosis? How would you work this case up further? Back to cytology images DiscussionCases of the Month Evaluation Coordinator: KarMing-Fung@ouhsc.edu