2019 Volume 33 Issue 5 Pages 504-510
Micronodular thymoma with lymphoid stroma is a rare tissue subtype among thymomas and its biological characteristics have yet to be clarified. We report herein a resected case of micronodular thymoma with lymphoid stroma. A 67-year-old woman visited our hospital after plain CT of the chest for screening purposes in another hospital revealed a mass in the anterior mediastinum. Contrast-enhanced CT of the chest in our hospital showed a multi-nodular tumor with clear boundaries measuring 80×60×30 mm in the anterior mediastinum. FDG-PET showed multiple accumulations in the anterior mediastinum. Surgery was performed because tumorous lesions could not be ruled out from the imaging findings. Surgery was started in a supine position under general anesthesia. Thymectomy was performed with a bilateral thoracic approach. The histopathological diagnosis was micronodular thymoma with lymphoid stroma. The patient was discharged on postoperative day 7.
