stage II thymomaListen to pronunciation(... thy-MOH-muh)Cancer has spread through the capsule (sac) that surrounds the thymus and into the fat around the thymus or into the lining of the chest cavity.More InformationThymoma and Thymic Carcinoma TreatmentSearch NCI's Dictionary of Cancer TermsStarts withContainsBrowse:ABCDEFGHIJKLMNOPQRSTUVWXYZ#