title: Contrast-enhanced ultrasound findings in a case of primary chest chondrosarcoma mimicking a porta hepatis mass.
abstract: We report a case of a 32-year-old woman who presented with upper abdominal pain. The physical examination revealed a palpable hard mass with a well-demarcated lower margin. Laboratory tests indicated hepatitis B viral infection. Computed tomography scan with intravenous contrast depicted a huge well-demarcated heterogeneous mass at the porta hepatis with irregular peripheral rim enhancement. Contrast-enhanced ultrasound showed peripheral irregular hyper-enhancement in the artery phase and hypo-enhancement in the portal and late phases. The postoperative histopathologic examination confirmed the diagnosis of low-grade chondrosarcoma. This is the first report of contrast-enhanced ultrasound findings of chondrosarcoma. There is some differential diagnosis to be discussed.
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, 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, China.
authors.forename: Lu-Yao
authors.initials: LY
authors.lastname: Zhou
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, China.
authors.forename: Jin-Yu
authors.initials: JY
authors.lastname: Liang
authors.affiliation: Department of Hepatobiliary Surgery, 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, 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, China. wangw73@mail.sysu.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
mesh_terms: D000008:Abdominal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D000328:Adult; D003287:Contrast Media; D003536:Cystadenocarcinoma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008107:Liver Diseases / Q000000981:diagnostic imaging*; D011169:Portal Vein / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
chemical_list: D003287:Contrast Media
keywords: Chondrosarcoma; Contrast-enhanced ultrasound; Porta hepatis mass; Thoracic wall