CTICasesMetastatic melanoma
Imaging findings
Chest radiograph shows abnormal opacity in the subcarinal and right infra-hilar regions (the "no opacity zone" on lateral views), and CT confirms markedly enlarged, necrotic subcarinal and hilar lymph nodes causing mass effect on the bronchus intermedius. Biopsy confirmed metastatic melanoma.
Key takeaways
Metastatic melanoma can manifest as isolated, necrotic, and asymmetric mediastinal and hilar lymphadenopathy. On lateral radiographs, this presents as loss of the normal lucency behind the bronchus intermedius (the "no opacity zone"), mimicking other necrotic diseases like tuberculosis.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- SchwannomaNeoplastic
- ThymomaNeoplastic
- Shared-sheath hematomaIatrogenic
- Acute eosinophilic pneumoniaExposure
- Malpositioned patent ductus arteriosus closure deviceIatrogenic
- Mixed connective tissue disease-associated non-specific interstitial pneumoniaILD
- Sinus venosus atrial septal defectCongenital
- Spontaneous intercostal artery hemorrhageVascular
See all cases from October 11, 2018 →