title: Intraneural cyst of the peroneal nerve.
abstract: A 15-year-old girl was referred to us because of foot drop. The motor deficit was characterized by a peculiar fluctuating course related to sporting activity: improvement of symptoms during no-sport periods and worsening during sport training. Neurophysiological examination revealed marked global impairment of muscles innervated by the peroneal nerve. Ultrasound and MRI showed a mass in close proximity to the neck of the fibula extending in a tubular fashion. At operation an intraneural lesion was found and was totally removed. Histology revealed that it was an intraneural cyst. A hypothesis on the pathogenesis was drawn up. One year after the operation a clinical and neurophysiological follow-up was performed.
authors.affiliation: Institute of Orthopaedics, Catholic University Sacred Heart, Rome, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Aulisa
authors.forename: F
authors.initials: F
authors.lastname: Tamburrelli
authors.forename: R
authors.initials: R
authors.lastname: Padua
authors.forename: S
authors.initials: S
authors.lastname: Lupparelli
authors.forename: P
authors.initials: P
authors.lastname: Tonali
authors.forename: L
authors.initials: L
authors.lastname: Padua
mesh_terms: D000293:Adolescent; D003560:Cysts / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D009431:Neural Conduction / Q000502:physiology; D010523:Peripheral Nervous System Diseases / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D010543:Peroneal Nerve / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014463:Ultrasonography