title: Ectopic micronodular thymoma with lymphoid stroma in the cervical region: a rare case associated with Langerhans cells proliferation.
abstract: Micronodular thymoma (MNT) with lymphoid stroma is a rare thymic epithelial neoplasm with the characteristics of multiple nodules separated by abundant lymphoid stroma. MNTs mainly arise in the anterior mediastinum and thymus, while ectopic MNTs are extremely rarely seen. Here, we report an ectopic MNT that occurred in the neck of a 62-year-old woman. There were also scattered eosinophilic granulocytes and S100(+)/CD1a(+) Langerhans cells within the tumor. This case provides a better understanding of such rare, poorly understood cases.
authors.affiliation: Department of Cell Biology, Key Laboratory of Cell Biology, Ministry of Public Health, and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, People's Republic of China.
authors.forename: Min
authors.initials: M
authors.lastname: Yu
authors.affiliation: Department of Pathology, Fushun Central Hospital, Fushun, People's Republic of China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Meng
authors.affiliation: Department of Pathology, Fushun Central Hospital, Fushun, People's Republic of China.
authors.forename: Bin
authors.initials: B
authors.lastname: Xu
authors.affiliation: Second Department of Medical Oncology, The General Hospital of Fushun Mining Bureau, Fushun, People's Republic of China.
authors.forename: Lin
authors.initials: L
authors.lastname: Zhao
authors.affiliation: Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, People's Republic of China.
authors.forename: Qingfu
authors.initials: Q
authors.lastname: Zhang
keywords: Langerhans cell; ectopic; lymphoid stroma; micronodular thymoma