CT findings of thymic tumors

Abstract

A CT scan can make accurate diagnoses of most thymic masses by assessing their size' shape. and internal ar.ch itectu re and is especially effective in detecting pleural implants. m ediastinal involve ment. and pulmonary paren. chymal invasion in malignant thymoma.The authors analyzed the CT findings of 10 histologically-proven thymic masses from 1983 to 1990 in Yeungnam University Hospital.There were 10 cases of thymic masses in the anterior mediastinum consisting of 6 benign. 3 invasive thymomas . and one thymolipoma. while myasthenia gravis was associated with 2 cases of benign thymomas and with one case of invasive thymomasThe CT findings of the benign thymomas (6 cases) were well-de fin ed. bordered ' round-or oval-shaped masses with a well-preserved fat plane between the thymic mass and m ediastinal great vessels' with no evidence of pleural implants and lung parenchymal invasion The CT findings of the invasive thymomas (3 cases) were irregular. marginated lobular masses with obliteration of the fat plane between the thymic mass and surrounding great vessels' with evidence of local invasion such as extension to A-P window and mass effect to bronchus. Irregular pleural thickening due to pleural metastasis. multip le m etastatic lung parenchymal nodules. and multiple mediastinallymph node e nlargement were also seen in the invasive thymomas.

Non-Melanocytic Skin Cancers of the Head and Neck: A Clinical Study in Jeju Province

“…The incidence rates of skin cancer were reported to be 0.25% during 1973–1983 7 , 0.76% during 1984–1989 8 , 1.02% during 1990–1995 9 , and 1.76% in 2011 6 . As shown in these studies, the incidence of skin cancer is increasing in Korea.…”