CTICasesCavitating Rectal Metastases
Imaging findings
CT chest shows multiple bilateral pulmonary nodules of varying sizes, many of which demonstrate central cavitation or pseudo-cavitation. The margins are lobulated and spiculated. Diagnosis was metastatic rectal adenocarcinoma.
Key takeaways
While squamous cell carcinoma is historically associated with cavitating lung metastases, adenocarcinoma (especially from the GI tract) is now the most common cause of cavitating metastases due to higher overall incidence.
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