title: Isolated intracranial Rosai-Dorfman disease without dural attachment--case report.
abstract: A 33-year-old female presented with an isolated well-enhanced intracerebral lesion with peritumoral edema in the frontal lobe, which was tentatively diagnosed preoperatively as either a primary intraparenchymal neoplasm or metastatic brain tumor. However, histological examinations yielded a diagnosis of Rosai-Dorfman disease. Isolated intracranial Rosai-Dorfman disease is very rare, and without dural attachment, as in our case, is exceptional. The present case mimicked intraparenchymal neoplasm. Rosai-Dorfman disease should be considered in the differential diagnosis of isolated intraparenchymal tumors. Magnetic resonance imaging including diffusion-weighted imaging may be helpful in the diagnosis of isolated intracranial Rosai-Dorfman disease.
authors.affiliation: Department of Neurological Surgery, Nihon University School of Medicine, Tokyo, Japan. fukushima.takao@nihon-u.ac.jp
authors.forename: Takao
authors.initials: T
authors.lastname: Fukushima
authors.forename: Kazunari
authors.initials: K
authors.lastname: Yachi
authors.forename: Akiyoshi
authors.initials: A
authors.lastname: Ogino
authors.forename: Takashi
authors.initials: T
authors.lastname: Ohta
authors.forename: Takao
authors.initials: T
authors.lastname: Watanabe
authors.forename: Atsuo
authors.initials: A
authors.lastname: Yoshino
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Katayama
mesh_terms: D000328:Adult; D054022:Cerebrum / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D005260:Female; D015618:Histiocytosis, Sinus / Q000150:complications* / Q000473:pathology* / Q000503:physiopathology; D006801:Humans; D007249:Inflammation / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D008279:Magnetic Resonance Imaging / Q000379:methods; D019635:Neurosurgical Procedures / Q000379:methods