title: Ultrasound in diagnosis of retroperitoneal femoral nerve injury: a case report.
abstract: We present a case of retroperitoneal femoral nerve injury after cut wounds at the lower abdomen. Electrodiagnostic tests revealed impaired function of nerve and muscles. A mass was observed at the retroperitoneal part of the femoral nerve by ultrasound, indicating that a traumatic neuroma composed of disordered fascicles was configurated after the injury. Postoperative pathology confirmed hypertrophic and hyperplastic nerve bundles of the mass. Great improvements were shown in the patient's symptoms and electrodiagnostic tests in the subsequent 3 months. This case presented a rare position of neuroma formation by ultrasound.
authors.affiliation: Department of Ultrasound, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai Institute of Ultrasound in Medicine, 600 Yishan Rd, Shanghai 200233, China.
authors.forename: Yunxia
authors.initials: Y
authors.lastname: Huang
authors.forename: Jiaan
authors.initials: J
authors.lastname: Zhu
authors.forename: Fang
authors.initials: F
authors.lastname: Liu
mesh_terms: D000007:Abdominal Injuries / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D000328:Adult; D005267:Femoral Nerve / Q000000981:diagnostic imaging / Q000293:injuries*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D017169:Neoplasms, Post-Traumatic / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology / Q000601:surgery; D009463:Neuroma / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology / Q000601:surgery*; D059348:Peripheral Nerve Injuries / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D012187:Retroperitoneal Space; D018570:Risk Assessment; D016896:Treatment Outcome; D014463:Ultrasonography; D014950:Wounds, Penetrating / Q000150:complications / Q000175:diagnosis / Q000601:surgery