CTICasesRecurrent Multilocular Thymic Cyst
Imaging findings
CT chest demonstrates recurrence of a shaggy, low-attenuation, multilocular cystic anterior mediastinal mass in the right cardiophrenic angle and posterior mediastinum, 10 years after initial resection of a benign multilocular thymic cyst.
Key takeaways
Multilocular thymic cysts are benign lesions that can occur in the anterior mediastinum. Although benign, they have a known propensity to recur years after surgical resection if any residual thymic epithelium is left behind. This recurrence does not imply malignant transformation.
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