- Benign or low-grade epithelial neoplasm of the thymus
- It often occurs in adults in the fifth and sixth decades.
- Classified as invasive and noninvasive varieties.
- Invasive: adhere to or invade neighboring structures
- Distant metastases are rare.
- About 10-15% of individuals with myasthenia gravis have thymoma.
- About 30% of patients with thymoma have myasthenia gravis.
 Imaging Findings
Patient #2: Invasive thymoma