CTICasesGiant Pulmonary Hamartoma
Imaging findings
CT chest shows a massive, well-circumscribed, calcified left lung mass (measuring over 15 cm) causing compression of the left main bronchus and left pulmonary artery. Surgical resection via an intrapericardial pneumonectomy confirmed a benign hamartoma (mesenchymoma).
Key takeaways
Pulmonary hamartomas are the most common benign lung tumors, typically presenting as small nodules with 'popcorn' calcification or fat. However, they can rarely grow to a giant size, representing a mesenchymoma. Despite their size, they remain histologically benign and are cured by complete resection.
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