title: Inflammatory pseudotumor of the choroid plexus. Case report.
abstract: The authors report a case of inflammatory pseudotumor that developed in the choroid plexus of the lateral ventricle. The patient was a 73-year-old man who had undergone surgery for rectal cancer at another hospital 5 years earlier. He was referred to the authors' department, with his chief symptoms consisting of disorientation, right hemiparesis, and gait disorder that had gradually developed during the preceding month. On computed tomography and magnetic resonance imaging, a well-demarcated and homogeneously contrasted tumorous lesion was noted in the region from the trigone to the medial wall of the inferior horn of the left lateral ventricle. Expansion of the inferior horn was also evident. Intraoperative findings showed that the tumor originated from the choroid plexus of the lateral ventricle, and the histopathological diagnosis was inflammatory pseudotumor. There are only 4 previously reported cases of inflammatory pseudotumor that developed in the choroid plexus; the authors review the literature and discuss the clinicopathological characteristics of the condition.
authors.affiliation: Department of Neurosurgery, National Hospital Organization, Yokohama Medical Center, Japan. miyahara@jk9.so-net.ne.jp
authors.forename: Kosuke
authors.initials: K
authors.lastname: Miyahara
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Fujitsu
authors.forename: Saburo
authors.initials: S
authors.lastname: Yagishita
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Takemoto
authors.forename: Teruo
authors.initials: T
authors.lastname: Ichikawa
authors.forename: Shigeo
authors.initials: S
authors.lastname: Matsunaga
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Takeda
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Niino
authors.forename: Takeki
authors.initials: T
authors.lastname: Shiina
mesh_terms: D000368:Aged; D001927:Brain Diseases / Q000175:diagnosis*; D002831:Choroid Plexus / Q000473:pathology*; D003221:Confusion / Q000175:diagnosis; D003937:Diagnosis, Differential; D020233:Gait Disorders, Neurologic / Q000175:diagnosis; D006104:Granuloma, Plasma Cell / Q000175:diagnosis*; D006801:Humans; D020547:Lateral Ventricles / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D010291:Paresis / Q000175:diagnosis; D014057:Tomography, X-Ray Computed