Intraneural cyst of the peroneal nerve.
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.
Aulisa
L
L
Institute of Orthopaedics, Catholic University Sacred Heart, Rome, Italy.
Tamburrelli
F
F
Padua
R
R
Lupparelli
S
S
Tonali
P
P
Padua
L
L
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