@article{oai:shiga-med.repo.nii.ac.jp:00003997, author = {片岡, 瑛子 and 藤田, 琢也 and 花岡, 淳 and KATAOKA, Yoko and FUJITA, Takuya and HANAOKA, Jun}, journal = {The Annals of thoracic surgery}, month = {Oct}, note = {pdf, Thyroid transcription factor-1 (TTF-1) has been widely used as a marker of primary lung cancer. However, there have been few reports on TTF-1 expression in thymomas. We here report the case of an asymptomatic 63-year-old man who presented with a right upper lung nodule and cystic mid-mediastinal tumor. The right upper lobe of the lung and the mediastinal tumor were resected. Histological examination of the operative specimen revealed TTF-1-positive type B2 thymoma and invasive pulmonary adenocarcinoma. Although rare, thymoma should be included in the different diagnosis of TTF-1-positive tumors., Journal Article}, title = {Coincidence of Thyroid Transcription Factor-1 Positive Thymoma and Pulmonary Adenocarcinoma.}, year = {2021} }