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01.04.2008 | Original Article

Real-time and Doppler US after pediatric segmental liver transplantation

I. Portal vein stenosis

verfasst von: Lisa Suzuki, Ilka R. S. de Oliveira, Azzo Widman, Nelson E. M. Gibeli, Francisco C. Carnevale, João G. Maksoud, Anne M. Hubbard, Giovanni G. Cerri

Erschienen in: Pediatric Radiology | Ausgabe 4/2008

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Abstract

Background

Accurate diagnosis of portal vein (PV) stenosis by real-time and color Doppler US (CD-US) after segmental liver transplantation in children can decrease morbidity by avoiding unnecessary biopsy, PV hypertension, thrombosis and loss of the graft.

Objective

To evaluate CD-US parameters for the prediction of PV stenosis after segmental liver transplantation in children.

Materials and methods

We retrospectively reviewed 61 CD-US examinations measuring the diameter at the PV anastomosis, velocities at the anastomosis (PV1) and in the segment proximal to the anastomosis (PV2), and the PV1/PV2 velocity ratio. The study group comprised patients with stenosis confirmed by angiography and the control group comprised patients with a good clinical outcome.

Results

PV stenosis was seen in 12 CD-US examinations. The mean PV diameter was smaller in the study group (2.6 mm versus 5.7 mm) and a PV diameter of <3.5 mm was highly predictive of stenosis (sensitivity 100%, specificity 91.8%).

Conclusion

A PV diameter of <3.5 mm is a highly predictive CD-US parameter for the detection of hemodynamically significant stenosis on angiography.

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Titel: Real-time and Doppler US after pediatric segmental liver transplantation
I. Portal vein stenosis
verfasst von: Lisa Suzuki
Ilka R. S. de Oliveira
Azzo Widman
Nelson E. M. Gibeli
Francisco C. Carnevale
João G. Maksoud
Anne M. Hubbard
Giovanni G. Cerri
Publikationsdatum: 01.04.2008
Verlag: Springer-Verlag
Erschienen in: Pediatric Radiology / Ausgabe 4/2008
Print ISSN: 0301-0449
Elektronische ISSN: 1432-1998
DOI: https://doi.org/10.1007/s00247-007-0733-5

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Real-time and Doppler US after pediatric segmental liver transplantation

I. Portal vein stenosis