In thymoma, all are seen except -
Thymoma is the most common Anterior mediastinal mass.

Thymomas are seen to be associated with

Myasthenia gravis
Acquired hypogammaglobulinemia
Pure red cell aplasia
Grave's ds
Pernicious anemia
Dennatomyositis-polymyositis
Cushing syndrome
Hypogamma globulinemia
Hyperalbuminemia
Red cell aplasia
Myaesthenia Gravis