title: Solitary Spinal Epidural Metastasis from Gastric Cancer.
abstract: Solitary epidural space metastasis of a malignant tumor is rare. We encountered a 79-year-old male patient with solitary metastatic epidural tumor who developed paraplegia and dysuria. The patient had undergone total gastrectomy for gastric cancer followed by chemotherapy 8 months priorly. The whole body was examined for suspected metastatic spinal tumor, but no metastases of the spine or important organs were observed, and a solitary mass was present in the thoracic spinal epidural space. The mass was excised for diagnosis and treatment and was histopathologically diagnosed as metastasis from gastric cancer. No solitary metastatic epidural tumor from gastric cancer has been reported in English. Among the Japanese, 3 cases have been reported, in which the outcome was poor in all cases and no definite diagnosis could be made before surgery in any case. Our patient developed concomitant pneumonia after surgery and died shortly after the surgery. When a patient has a past medical history of malignant tumor, the possibility of a solitary metastatic tumor in the epidural space should be considered.
authors.affiliation: Department of Orthopaedic Surgery, Toho University School of Medicine, Tokyo, Japan.
authors.forename: Taisei
authors.initials: T
authors.lastname: Sako
authors.affiliation: Department of Orthopaedic Surgery, Toho University School of Medicine, Tokyo, Japan.
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Iida
authors.affiliation: Department of Orthopaedic Surgery, Toho University School of Medicine, Tokyo, Japan.
authors.forename: Yuichirou
authors.initials: Y
authors.lastname: Yokoyama
authors.affiliation: Department of Orthopaedic Surgery, Toho University School of Medicine, Tokyo, Japan.
authors.forename: Shintaro
authors.initials: S
authors.lastname: Tsuge
authors.affiliation: Department of Orthopaedic Surgery, Toho University School of Medicine, Tokyo, Japan.
authors.forename: Keiji
authors.initials: K
authors.lastname: Hasegawa
authors.affiliation: Department of Orthopaedic Surgery, Toho University School of Medicine, Tokyo, Japan.
authors.forename: Akihito
authors.initials: A
authors.lastname: Wada
authors.affiliation: Department of Pathology, Toho University School of Medicine, Tokyo, Japan.
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Mikami
authors.affiliation: Department of Orthopaedic Surgery, Toho University School of Medicine, Tokyo, Japan.
authors.forename: Hiroshi
authors.identifier: 0000-0002-8153-8202
authors.initials: H
authors.lastname: Takahashi