title: Hourglass cystic schwannoma of the trochlear nerve.
abstract: Cranial nerves' schwannomas most commonly arise from the vestibular nerve. Involvement of other cranial nerves, in absence of neurofibromatosis, is extremely rare. A case of a pathology proven trochlear nerve schwannoma, with internal cystic components, in a patient with isolated right superior oblique muscle palsy, is described. Only 67 cases of such entity have been previously reported in the literature.
authors.affiliation: S. Orsola-Malpighi University Hospital, Bologna, Italy. t.bartalena@email.it
authors.forename: Tommaso
authors.initials: T
authors.lastname: Bartalena
authors.forename: Chiara
authors.initials: C
authors.lastname: Leoni
authors.forename: Marco Pastore
authors.initials: MP
authors.lastname: Trossello
authors.forename: Maria Francesca
authors.initials: MF
authors.lastname: Rinaldi
authors.forename: Alessandro
authors.initials: A
authors.lastname: Cianfoni
authors.forename: Giacomo
authors.initials: G
authors.lastname: Caprara
authors.forename: Nicola
authors.initials: N
authors.lastname: Sverzellati
authors.forename: Massimo
authors.initials: M
authors.lastname: De Filippo
authors.forename: Roberto
authors.initials: R
authors.lastname: Padovani
mesh_terms: D001706:Biopsy; D003390:Cranial Nerve Neoplasms / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009442:Neurilemmoma / Q000473:pathology* / Q000601:surgery; D014321:Trochlear Nerve / Q000473:pathology* / Q000601:surgery