Posttraumatic pseudolipoma: MRI appearances.

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Serval ID
serval:BIB_F4C013705CAB
Type
Article: article from journal or magazin.
Collection
Publications
Title
Posttraumatic pseudolipoma: MRI appearances.
Journal
European Radiology
Author(s)
Theumann N., Abdelmoumene A., Wintermark M., Schnyder P., Gailloud M.C., Resnick D.
ISSN
0938-7994
Publication state
Published
Issued date
09/2005
Peer-reviewed
Oui
Volume
15
Number
9
Pages
1876-1880
Language
english
Notes
Publication types: Comparative Study ; Journal Article
Abstract
The goal of this study was to describe the MRI characteristics of posttraumatic pseudolipomas. Ten patients with previous history of blunt trauma or local surgery were investigated with MRI at the level of their deformity. The etiology was blunt trauma in eight patients and postoperative trauma in two. For all patients medical documentation, in the form of clinical history and physical examination, confirmed that a visible hematoma was present acutely at the same location following the injury and that the contour deformity subsequently appeared. All patients underwent liposuction. Preoperative bilateral MRI examinations were performed on all patients. The mean clinical follow-up was 17.8 months. MRI examinations were interpreted in consensus by two experienced musculoskeletal radiologists with attention to fatty extension (subcutaneous fatty thickness and anatomical extension), asymmetry compared with the asymptomatic side, the presence or absence of fibrous septae or nonfatty components, and patterns of contrast enhancement. Ten posttraumatic pseudolipomas were identified. Clinically, they showed as subcutaneous masses with the consistency of normal adipose tissue. Their locations were the abdomen (n=1), hip (n=1), the upper thigh (n=6), the knee (n=1), and the ankle (n=1). On MRI examinations, using the contralateral side as a control, pseudolipomas appeared as focal fatty masses without a capsule or contrast enhancement. Posttraumatic pseudolipomas may develop at a site of blunt trauma or surgical procedures often antedated by a soft tissue hematoma. Characteristic MRI findings are unencapsulated subcutaneous fatty masses without contrast enhancement.
Keywords
Adipose Tissue/pathology, Adolescent, Adult, Contrast Media, Female, Follow-Up Studies, Hematoma/complications, Humans, Image Enhancement, Lipectomy, Lipoma/diagnosis, Lipoma/etiology, Magnetic Resonance Imaging, Male, Middle Aged, Postoperative Complications, Retrospective Studies, Soft Tissue Injuries/complications, Soft Tissue Neoplasms/diagnosis, Soft Tissue Neoplasms/etiology, Wounds, Nonpenetrating/complications
Pubmed
Web of science
Open Access
Yes
Create date
11/04/2008 13:00
Last modification date
01/10/2019 7:20
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