TY - JOUR AU - Goto, Tatsuya AU - Sato, Seijiro AU - Koike, Terumoto AU - Tsuchida, Masanori PY - 2018 TI - Surgical resection of a giant polycystic seminoma of the mediastinum JF - Journal of Thoracic Disease; Vol 10, No 6 (June 30, 2018): Journal of Thoracic Disease Y2 - 2018 KW - N2 - Mediastinal germ cell tumors consist of only 10–15% of all mediastinal tumors, while mediastinal seminomas account for approximately 25–40% of all primary malignant mediastinal germ cell tumors (1,2). These are slow-growing tumors that typically manifest as a solid, lobulated mass on a computed tomography (CT) scan (3); no specific serum tumor markers exist on mediastinal seminomas. Here, we describe a patient with a giant polycystic seminoma that was diagnosed on pathologic examination after surgical resection. UR - https://jtd.amegroups.org/article/view/21688