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Original Article

Korean J Transplant 2019; 33(2): 30-35

Published online June 30, 2019

https://doi.org/10.4285/jkstn.2019.33.2.30

© The Korean Society for Transplantation

Diagnostic performance of multidetector computed tomography for symptomatic lymphoceles in kidney transplant recipients

Heungman Jun1, Sung Ho Hwang2

1Department of Surgery, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea; 2Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea

Correspondence to: Heungman Jun Department of Surgery, Ilsan Paik Hospital, Inje University College of Medicine, 170 Juhwa-ro, Ilsanseo-gu, Goyang 10380, Korea Tel: +82-31-910-7947, Fax: +82-31-910-7784 E-mail: midasia@hanmail.net

Received: December 27, 2018; Revised: May 8, 2019; Accepted: May 10, 2019

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background: To evaluate the size of a postoperative lymphocele in the coronal and axial reconstruction planes using multidetector computed tomography (MDCT) in kidney transplantation recipients.
Methods: We evaluated 92 recipients who underwent MDCT of the abdominopelvis at 1 month after kidney transplantation. The axial short axis, axial surface area, coronal short axis, and coronal surface area of the lymphocele were measured using the reconstructed MDCT coronal and axial images. Depending on the clinical manifestations and radiologic findings of the recipients, all lymphoceles were classified into symptomatic and asymptomatic. We compared the suitability of the size measurement on coronal and axial planes of MDCT reconstruction for symptomatic lymphocele in kidney transplant recipients using Spearman's correlation analysis and comparisons of receiver operating characteristic (ROC) curves.
Results: Areas under the ROC curves were 0.957 and 0.928 for the axial short axis and axial surface area and 0.968 and 0.966 for the coronal short axis and coronal surface area, respectively. In pairwise comparison of the ROC curve of the parameters of the symptomatic lymphoceles, the coronal measurement was significant in contrast to the axial measurement (short axis, P=0.357; surface area, P=0.047).
Conclusions: For the prediction of symptomatic lymphoceles using MDCT, the coronal measurement of postoperative lymphoceles can significantly improve diagnostic performance over axial measurement in kidney transplant recipients.

Keywords: Lymphocele, Kidney transplantation, Multidetector computed tomography