In thymoma, all are seen except -
Hypogamma globulinemia
Hyperalbuminemia
Red cell aplasia
Myaesthenia Gravis
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