title: An uncommon presentation of Kikuchi-Fujimoto disease as mediastinal lymphadenopathy.
abstract: We experienced an uncommon presentation of Kikuchi-Fujimoto disease (KFD) with sole mediastinal lymphadenopathy in senior age, which was histologically diagnosed by thoracoscopic biopsy leading to appropriate therapy. A 69-year-old man was admitted due to intermittent high fever, general malaise, and appetite loss lasting over 3 months along with 10-kg weight loss in 6 months. Chest computed tomography (CT) showed isolated mediastinal lymphadenopathy, and malignant diseases including malignant lymphoma or metastatic carcinoma, tuberculous lymphadenitis, and sarcoidosis were considered. Therefore thoracoscopic biopsy should be performed for the correct diagnosis, even in uncommon portion of lymph node swelling and age for KFD.
authors.affiliation: 1 Department of Thoracic Surgery, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan ; 2 Department of Thoracic Surgery, The University of Tokyo Graduate School of Medicine, Tokyo, Japan ; 3 Department of Hematology, 4 Department of Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan.
authors.forename: Haruaki
authors.initials: H
authors.lastname: Hino
authors.affiliation: 1 Department of Thoracic Surgery, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan ; 2 Department of Thoracic Surgery, The University of Tokyo Graduate School of Medicine, Tokyo, Japan ; 3 Department of Hematology, 4 Department of Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Nishimura
authors.affiliation: 1 Department of Thoracic Surgery, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan ; 2 Department of Thoracic Surgery, The University of Tokyo Graduate School of Medicine, Tokyo, Japan ; 3 Department of Hematology, 4 Department of Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan.
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Nitadori
authors.affiliation: 1 Department of Thoracic Surgery, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan ; 2 Department of Thoracic Surgery, The University of Tokyo Graduate School of Medicine, Tokyo, Japan ; 3 Department of Hematology, 4 Department of Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan.
authors.forename: Shigesaburo
authors.initials: S
authors.lastname: Miyakoshi
authors.affiliation: 1 Department of Thoracic Surgery, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan ; 2 Department of Thoracic Surgery, The University of Tokyo Graduate School of Medicine, Tokyo, Japan ; 3 Department of Hematology, 4 Department of Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan.
authors.forename: Atsuko
authors.initials: A
authors.lastname: Seki
authors.affiliation: 1 Department of Thoracic Surgery, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan ; 2 Department of Thoracic Surgery, The University of Tokyo Graduate School of Medicine, Tokyo, Japan ; 3 Department of Hematology, 4 Department of Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan.
authors.forename: Tomio
authors.initials: T
authors.lastname: Arai
authors.affiliation: 1 Department of Thoracic Surgery, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan ; 2 Department of Thoracic Surgery, The University of Tokyo Graduate School of Medicine, Tokyo, Japan ; 3 Department of Hematology, 4 Department of Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Nakajima
keywords: Video-assisted surgery; histiocytic necrotizing lymphadenitis; mediastinum; tuberculosis