CTICasesThymic Cyst
Imaging findings
Serial CT chest scans over 1.5 years show rapid enlargement of a large, well-circumscribed, non-enhancing anterior mediastinal cystic mass extending from the thoracic inlet to the cardiophrenic angle. Pathology post-resection confirmed a benign thymic cyst.
Key takeaways
Thymic cysts are benign anterior mediastinal lesions. Although they are typically slow-growing and can be managed conservatively, they can occasionally show rapid volumetric expansion due to hemorrhage or inflammation, leading to chest pressure and necessitating surgical resection.
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