title: Focal nodular hyperplasia: an unusual liver mass in a paediatric patient.
abstract: We report an unusual case of focal nodular hyperplasia (FNH) occurring in a 19-month-old female without a typical central fibrous scar. Ultrasound demonstrated a solid, hypoechoic, highly vascular mass situated in the left lobe of the liver. Computed tomography showed a solid mass with no evidence of a central fibrous scar. A hepatic angiogram demonstrated enlarged right and left hepatic arteries supplying the vascular tumour, with early venous drainage into the inferior vena cava; a feature which has not been previously described. Surgical resection was carried out and a solid, nodular tumour measuring 9 x 4 x 4 cm was removed. The diagnosis of FNH was made histologically. The characteristic imaging findings of FNH will be discussed and a review of the literature of FNH in children will be presented.
authors.affiliation: Department of Diagnostic Imaging, Pathology and Paediatric Surgery, Kandang Kerbau Women's and Children's Hospital, Singapore.
authors.forename: E L
authors.initials: EL
authors.lastname: Teo
authors.forename: H K
authors.initials: HK
authors.lastname: Ang
authors.forename: N T
authors.initials: NT
authors.lastname: Ong
authors.forename: A P
authors.initials: AP
authors.lastname: Kendrick
mesh_terms: D000792:Angiography; D001706:Biopsy; D005260:Female; D020518:Focal Nodular Hyperplasia / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D006498:Hepatectomy; D006499:Hepatic Artery / Q000000981:diagnostic imaging; D006801:Humans; D007223:Infant; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging