title: Squamous cell carcinoma of the hilar lymph node with unknown primary tumor: a case report.
abstract: We herein report a rare case of squamous cell carcinoma (SCC) located in the hilar nodes with unknown primary tumor. A 56-year-old man underwent a thoracotomy under the clinical diagnosis of lung cancer with hilar nodes involvement. The tumor was found at the hilus and resected without pulmonary resection. The pathological diagnosis of this tumor was metastatic SCC in hilar lymph nodes. Examinations of the whole body failed to detect a primary site of the SCC. The patient is doing well with no clinical sign of recurrence 32 months after surgery.
authors.affiliation: Department of Surgery II, Faculty of Medicine, University of Miyazaki, Kiyotake, Miyazaki, Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Tomita
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Matsuzaki
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Shimizu
authors.forename: Masaki
authors.initials: M
authors.lastname: Hara
authors.forename: Takanori
authors.initials: T
authors.lastname: Ayabe
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Enomoto
authors.forename: Toshio
authors.initials: T
authors.lastname: Onitsuka
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009382:Neoplasms, Unknown Primary; D049268:Positron-Emission Tomography; D013902:Radiography, Thoracic; D013908:Thoracotomy; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome