What is the most likely diagnosis?
- 63 year-old male with metastatic disease to the lungs. What is the most likely primary?

Frontal and lateral radiographs of chest
- Glioblastoma Multiforme
- Small Cell Lung Cancer
- Carcinoma of the Prostate
- Carcinoma of the Esophagus
- Pancreatic Adenocarcinoma
Additional Images-Axial CT scan image of chest

Additional Images

Axial CT scan image of chest

Answer:
4. Carcinoma of the Esophagus
More (Click Discussion Tab)
Cavitary Metastases from Esophageal Carcinoma
General Considerations
- Metastases to the lung occur in about 30% of all malignant disease
- Routes of spread include hematogenous, lymphangitic and direct extension
- Most metastatic lung nodules develop through hematogenous spread
- Primary lung carcinomas cavitate more frequently than metastatic lesions to the lung
- Most cavitary metastases are epithelial in origin