title: Renal venous thrombosis in an infant with predisposing thrombotic factors: color Doppler ultrasound and MR evaluation.
abstract: We report a case of a neonate with hereditary thrombophilia presenting with renal venous thrombosis (RVT). Early color Doppler findings of RVT were lacking venous flow, and the arterial diastolic flow was reversed. This very high-resistance arterial flow is for the first time described in neonatal RVT. Magnetic resonance imaging showed low signal intensity of the renal pyramids on T1- and T2-weighted images, suggesting acute hemorrhage. After intravenous contrast injection, persistent cortical enhancement was observed along with lack of medullary enhancement. Despite the progressive reestablishment of some venous drainage, the kidney showed atrophy and loss of function.
authors.affiliation: Department of Radiology, Medical School, University of Ioannina, 45110 Ioannina, Greece. margyrop@cc.uoi.gr
authors.forename: Maria I
authors.initials: MI
authors.lastname: Argyropoulou
authors.forename: Vassilios I
authors.initials: VI
authors.lastname: Giapros
authors.forename: Frederica
authors.initials: F
authors.lastname: Papadopoulou
authors.forename: Aikaterini A
authors.initials: AA
authors.lastname: Drougia
authors.forename: Pangiotis
authors.initials: P
authors.lastname: Nikolopoulos
authors.forename: Georgios A
authors.initials: GA
authors.lastname: Vartholomatos
authors.forename: Styliani
authors.initials: S
authors.lastname: Andronikou
mesh_terms: D015984:Causality; D006801:Humans; D007231:Infant, Newborn; D008279:Magnetic Resonance Imaging; D008297:Male; D012082:Renal Veins; D019851:Thrombophilia / Q000235:genetics*; D018615:Ultrasonography, Doppler, Color; D020246:Venous Thrombosis / Q000097:blood / Q000175:diagnosis* / Q000000981:diagnostic imaging*