CTICasesMetastatic Lung Adenocarcinoma Presenting as a Hypervascular Superior Vena Cava Mass
Imaging findings
Chest CT demonstrates a highly vascular, enhancing mediastinal mass arising from and occluding the superior vena cava, extending from just above the right atrium into the azygos arch. Multiple prominent collateral pathways are present due to severe superior vena cava syndrome, along with enlarged right paratracheal and supraclavicular lymph nodes, without any obvious primary pulmonary parenchymal mass.
Key takeaways
While hypervascular masses involving the superior vena cava typically raise suspicion for primary sarcomas, Castleman's disease, or paragangliomas, they can rarely represent metastatic lung adenocarcinoma even in the absence of a visible primary lung tumor. Biopsy of accessible regional lymph nodes, such as supraclavicular nodes, is crucial for securing the correct pathological diagnosis.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Intravascular Fat in the Pulmonary Artery (Intravascular Lipoma)Artifact
- Uncorrected Type 1 Truncus ArteriosusCongenital
- Pulmonary Interstitial Emphysema in Dermatomyositis-Associated Interstitial Lung Disease and Diffuse Alveolar DamageILD
- Traumatic Right Subclavian Artery-to-Vein Fistula and PseudoaneurysmTrauma
- Sinus Venosus Atrial Septal Defect and Partial Anomalous Pulmonary Venous Return with Eisenmenger SyndromeCongenital
- Overlying Hair and Deodorant/Talc Artifacts Mimicking Interstitial Lung Disease and CalcificationArtifact
- Catamenial Hemoptysis (Thoracic Endometriosis Syndrome)Other
- Sarcoidosis Presenting with Uveitis and a Miliary Nodular PatternAutoimmune
See all cases from July 15, 2021 →