| umls-concept:C1336082 | skos:definition | NCI: A rare primary thymic carcinoma, characterized by the presence of keratinizing or non-keratinizing malignant squamous cells. Approximately 10-20% of cases occur in combination with thymoma. The prognosis depends on the tumor stage and the degree of cellular differentiation. -- 2005 | lld:umls |
