CTICasesPrimary Mediastinal Non-Seminomatous Germ Cell Tumor
Imaging findings
Frontal and lateral chest radiographs demonstrate a large, lobulated anterior mediastinal mass. Contrast-enhanced CT reveals a hypervascular anterior mediastinal mass with areas of necrosis. The mass causes severe extrinsic compression of the right ventricular outflow tract (RVOT) and the main pulmonary artery, narrowing the outflow tract to a slit-like caliber.
Key takeaways
Primary mediastinal non-seminomatous germ cell tumors are highly aggressive, rapidly growing malignancies that characteristically present in young males. Because of their rapid growth, they can cause severe extrinsic compression of adjacent low-pressure cardiovascular structures like the RVOT and main pulmonary artery, leading to acute dyspnea and right heart strain. Markedly elevated serum alpha-fetoprotein (AFP) and beta-hCG levels are diagnostic hallmarks.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Venous Air Embolism and Non-Cardiogenic Pulmonary EdemaIatrogenic
- Myotonic Dystrophy Type 1 with Diaphragmatic and Skeletal Muscle AtrophyCongenital
- Intramural Hematoma of the Ascending Aorta with Evolution to an Ulcer-Like ProjectionVascular
- Acute Aortic Intramural Hematoma with Intimal-Medial BreachVascular
- Subclavian Artery Thrombosis due to Anomalous First RibCongenital
- Silicosis with Progressive Massive FibrosisExposure
- Plastic BronchitisOther
- Ruptured Type B Aortic Dissection and Bilateral Partial Anomalous Pulmonary Venous ReturnVascular
See all cases from April 20, 2017 →