title: [A case of intrathoracic perineurial cyst].
abstract: A 67-year-old man was referred to our surgical clinic for evaluation of an abnormal shadow on the chest X-ray examination. CT scan and MRI revealed a tumor in the posterior mediastinum and destruction of the pedicle and intraspinal invagination by the tumor. The tumor in a paravertebral area are linked with a vertebral canal through a destructed intervertebral foramen. MRI showed that the tumor was a cyst which contained fluid. On thoracotomy a hen's egg sized cyst was found in the posterior mediastinum, the cyst was excised. Pathological diagnosis was a perineurial cyst. This case was clearly differentiated from an intrathoracic meningocele and a neurilemmoma microscopically. This case is the first intrathoracic perineurial cyst in Japan.
authors.affiliation: First Department of Surgery, Gifu University School of Medicine, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kokubo
authors.forename: N
authors.initials: N
authors.lastname: Imai
authors.forename: S
authors.initials: S
authors.lastname: Sakai
authors.forename: S
authors.initials: S
authors.lastname: Murakawa
authors.forename: H
authors.initials: H
authors.lastname: Hirose
authors.forename: Y
authors.initials: Y
authors.lastname: Simokawa
mesh_terms: D000368:Aged; D003560:Cysts / Q000473:pathology / Q000601:surgery*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000473:pathology / Q000601:surgery*; D008588:Meningocele / Q000473:pathology; D009442:Neurilemmoma / Q000473:pathology