title: Venous infarction mimicking a neoplasm in spontaneous intracranial hypotension: an unusual cause of Parinaud's syndrome.
abstract: We present a case of longstanding, undiagnosed spontaneous intracranial hypotension (SIH) with an acute presentation of Parinaud's syndrome, in whom serial imaging demonstrated development of a midbrain mass. The patient was ultimately diagnosed with tumefactive venous infarction secondary to SIH. However, this patient underwent a brainstem biopsy, which in retrospect may have been avoidable. This case demonstrates the imaging features of tumefactive venous infarction in SIH and highlights the risk of misinterpretation as a neoplasm with potentially catastrophic consequences.
authors.affiliation: Lysholm Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, London, UK t.bray@ucl.ac.uk.
authors.forename: Timothy James Pengilley
authors.initials: TJ
authors.lastname: Bray
authors.affiliation: Lysholm Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, London, UK.
authors.forename: Hoskote
authors.initials: H
authors.lastname: Chandrashekar
authors.affiliation: Department of Neurology, UCL Institute of Neurology, National Hospital for Neurology and Neurosurgery, London, UK.
authors.forename: Jeremy
authors.initials: J
authors.lastname: Rees
authors.affiliation: Department of Neurology, UCL Institute of Neurology, National Hospital for Neurology and Neurosurgery, London, UK.
authors.forename: Ailbhe
authors.initials: A
authors.lastname: Burke
authors.affiliation: Department of Neuropathology, UCL Institute of Neurology, National Hospital for Neurology and Neurosurgery, London, UK.
authors.forename: Ashirwad
authors.initials: A
authors.lastname: Merve
authors.affiliation: Lysholm Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, London, UK.
authors.forename: Stefanie
authors.initials: S
authors.lastname: Thust