title: Hilar biliary neurofibroma without neurofibromatosis: case report with contrast-enhanced ultrasound findings.
abstract: Solitary neurofibroma located in the hilum of the liver is extremely rare, particularly without neurofibromatosis. We herein report a case of hilar biliary neurofibroma without signs of von Recklinghausen's disease. A 36-year-old man was admitted to our department with progressive jaundice. The case was diagnosed as hilar cholangiocarcinoma based on preoperative imaging. The patient consequently received a Roux-en-Y hepaticojejunostomy and was confirmed with neurofibroma pathologically. This is the first reported imaging finding of hilar biliary neurofibroma using contrast-enhanced ultrasound, emphasizing the differential diagnosis of biliary tumors.
authors.affiliation: Department of Medical Ultrasonics, The First Affiliated Hospital of Sun Yat-Sen University, Institute of Diagnostic and Interventional Ultrasound, Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, People's Republic of China.
authors.forename: Huan-Ling
authors.initials: HL
authors.lastname: Guo
authors.affiliation: Department of Medical Ultrasonics, The First Affiliated Hospital of Sun Yat-Sen University, Institute of Diagnostic and Interventional Ultrasound, Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, People's Republic of China.
authors.forename: Li-da
authors.initials: LD
authors.lastname: Chen
authors.affiliation: Department of Medical Ultrasonics, The First Affiliated Hospital of Sun Yat-Sen University, Institute of Diagnostic and Interventional Ultrasound, Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, People's Republic of China.
authors.forename: Zhu
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Department of Medical Ultrasonics, The First Affiliated Hospital of Sun Yat-Sen University, Institute of Diagnostic and Interventional Ultrasound, Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, People's Republic of China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Huang
authors.affiliation: Department of Medical Ultrasonics, The First Affiliated Hospital of Sun Yat-Sen University, Institute of Diagnostic and Interventional Ultrasound, Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, People's Republic of China.
authors.forename: Jin-Ya
authors.initials: JY
authors.lastname: Liu
authors.affiliation: Department of Medical Ultrasonics, The First Affiliated Hospital of Sun Yat-Sen University, Institute of Diagnostic and Interventional Ultrasound, Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, People's Republic of China.
authors.forename: Quan-Yuan
authors.initials: QY
authors.lastname: Shan
authors.affiliation: Department of Medical Ultrasonics, The First Affiliated Hospital of Sun Yat-Sen University, Institute of Diagnostic and Interventional Ultrasound, Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, People's Republic of China.
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Xie
authors.affiliation: Department of Medical Ultrasonics, The First Affiliated Hospital of Sun Yat-Sen University, Institute of Diagnostic and Interventional Ultrasound, Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, People's Republic of China.
authors.forename: Ming-de
authors.initials: MD
authors.lastname: Lu
authors.affiliation: Department of Medical Ultrasonics, The First Affiliated Hospital of Sun Yat-Sen University, Institute of Diagnostic and Interventional Ultrasound, Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, People's Republic of China. wangw73@mail.sysu.edu.cn.
authors.forename: Wei
authors.identifier: http://orcid.org/0000-0002-9485-583X
authors.initials: W
authors.lastname: Wang
mesh_terms: D000328:Adult; D001661:Biliary Tract Neoplasms / Q000150:complications / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D003287:Contrast Media; D003937:Diagnosis, Differential; D006801:Humans; D041781:Jaundice, Obstructive / Q000175:diagnosis / Q000209:etiology / Q000473:pathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D009455:Neurofibroma / Q000150:complications / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography / Q000379:methods
chemical_list: D003287:Contrast Media
keywords: Computed tomography; Contrast-enhanced ultrasound; Hilar bile duct; Magnetic resonance imaging; Obstructive jaundice; Solitary neurofibroma