title: Enhancing meningeal blood vessels masquerading as leptomeningeal spread of tumor in obstructive hydrocephalus.
abstract: MR showed an enhancing mass in the pineal region and hydrocephalus and leptomeningeal enhancement, thought to indicate pinealoblastoma with leptomeningeal spread. During resection there was no evidence of spread, and repeat MR showed no residual tumor or meningeal enhancement, so the patient was not treated for metastasis. Because there were no signs of leptomeningeal tumor 4 months after surgery, the meningeal enhancement is thought to have been related to venous stasis secondary to obstructive hydrocephalus.
authors.affiliation: Department of Radiology, University of Miami School of Medicine, FL 33136, USA.
authors.forename: S D
authors.initials: SD
authors.lastname: LeBlang
authors.forename: S
authors.initials: S
authors.lastname: Falcone
authors.forename: R M
authors.initials: RM
authors.lastname: Quencer
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D002196:Capillaries / Q000473:pathology; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008577:Meningeal Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000556:secondary; D008578:Meninges / Q000098:blood supply*; D010870:Pineal Gland / Q000473:pathology* / Q000601:surgery; D010871:Pinealoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D011183:Postoperative Complications / Q000175:diagnosis