thymoma

• most common anterior mediastinal mass in adults (50%)
• age: around 20 years
• 50% malignant

• myasthenia gravis
• pure red cell aplasia
• acquired hypogammaglobulinemia
• paraneoplastic syndromes (e.g. Cushing syndrome)

• noninvasive thymoma
  • almost all are >25 years old (5-6th decade)
  • calcification in 5-20%
• invasive thymoma
  • mets to pleura and lungs (6%); rarely extrathoracic met

© 2002, C.E. Kahn, Jr.
2002-04-18