Had ct chest showed fatty tissue on thymus gland. is this considered thymolipoma? what is, if any, treatment?

Probably normal: Thymus gradually becomes replaced by fat and involutes throughout maturation. The gland is atrophic or diminihed. Thymus is biggest at puberty and then regresses. Thymolipoma is very rare benign anterior mediastinal tumor. Most patients are asymptomatic but may present with symptoms attributable to its huge size or less frequently associated autoimmune myasthenia gravis, your situation is normal.

Fatty Thymus: Thymic gland has fatty involution over time. The amount of soft tissue and the mass effect is the concerning part, if present. You can follow with mr+contrast or ct, and if it gets too big. Surgically local resection curative, no reports of recurrence, metasasis or mortality. Can be seen withmg, aplastic anemia, hypogammaglobulinaemia, graves disease, hodgkin lymphoma, chromic lymphocytic leukemia.