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Lee, Lee, Woo, Lee, Kim, and Hong: Posterior Mediastinal Angiolipoma that Presented with Pleural Effusion
Chest Radiology
Case Report

Journal of the Korean Society of Radiology 2010; 63(5): 449-452.

Published online: 30 November 2010

DOI: https://doi.org/10.3348/jksr.2010.63.5.449

Posterior Mediastinal Angiolipoma that Presented with Pleural Effusion

Seok Hoon Lee, M.D., Jae Hyung Lee, M.D.2, Jeong Joo Woo, M.D., Byoung Hoon Lee, M.D.2, Sang Hoon Kim, M.D.2, Young Ok Hong, M.D.3

1Department of Radiology, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea.

2Department of Internal Medicine, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea.

3Department of Anatomic Pathology, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea.

Address reprint requests to: Jae Hyung Lee, M.D., Department of Internal Medicine, Eulji General Hospital, Eulji University School of Medicine, 280-1, Hagye 1-dong, Nowon-gu, Seoul 139-711, Korea. Tel. 82-2-970-8208, Fax. 82-2-970-8621, medijae@eulji.ac.kr

Received 20 July 2010       Accepted 6 August 2010

Copyright © 2010 The Korean Society of Radiology

Abstract

Angiolipoma is a rare benign tumor composed of mature adipose tissues and blood vessels. It is usually located in the subcutaneous tissue of the trunk, the extremities and the neck, and few cases of angiolipoma have been reported in the mediastinum. We report here on a rare case of posterior mediastinal angiolipoma that presented with pleural effusion.

Keywords: Angiolipoma, Mediastinum, Pleural Effusion

Figures and Tables

Fig. 1

Posterior mediastinal angiolipoma in 66-year-old woman.

A. On pre-contrast CT scan, the mass (white arrows) is poorly differentiated from the pleural effusion because the density of the mass is similar to that of the fluid (20-30 HU).
B. Post-contrast CT scan demonstrates a strong enhancement (150-200 HU) and internal irregular areas of low attenuation (30-40 HU) in the mass. The right cortex of the vertebral body is eroded by the mass (black arrows).
C. On coronal PET scan, the mass (white arrows) shows moderate increased FDG uptake (SUV : 1~2) higher than that of adjacent soft tissue in the 9th right paravertebral area.
D. Microscopic examination of the surgical specimen shows a tumor composed of mature adipose tissue and thin-walled blood vessels (H & E staining, ×100).
jksr-63-449-g001

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