2024年9月23日 · MRI. MRI is the modality of choice for diagnosis. A typical appearance is of a fat-containing frond-like synovial mass, usually outlined by concurrent joint effusion. The lesion follows the signal intensity of fat on all sequences 4,5. T1: high signal; will saturate on fat suppressed sequences

Differential diagnosis on MRI. Lipoma arborescens has characteristic features that usually make it a straightforward MRI diagnosis. However, other entities occurring as filling defects in the suprapatellar recess may cause confusion.

Here, we present the clinical characteristics and imaging features of lipoma arborescens on plain radiograph, ultrasonography (USG), MRI, and histopathological examination of the postoperative specimen with particular emphasis on the role of MRI, which is now thought to be the best and the only imaging modality for evaluating intra-articular ...

Coronal (c) T1 and (d) T2 fat-saturated MR images of the right knee joint show the typical features of lipoma arborescens (arrows) with background degenerative changes in the form of marginal osteophytes (arrowheads), compatible with the secondary form of lipoma arborescens.

Purpose: To evaluate the computed tomography (CT) and magnetic resonance imaging (MRI) features of lipoma arborescens. Material and methods: The imaging features of 15 patients with pathologically proven lipoma arborescens were retrospectively analyzed including lesion number, shape, location, size, margins, attenuation on CT, and signal ...

2024年6月1日 · The typical magnetic resonance imaging (MRI) characteristics of lipoma arborescens include a synovial mass with an arborescent frond-like structure in the pre-femoral area. This mass typically demonstrates signal intensity akin to that of fat across all pulse sequences, with signal suppression observed in STIR or fat saturation sequences.

Massive joint effusion with frond-like synovial thickening noted in suprapatellar bursa showing T1 hyperintensity with saturation on fat sat sequences and peripheral rim enhancement on post-contrast sequences. These findings are suggestive of lipoma arborescens.

2024年5月12日 · Lipoma arborescens (LA) is characterised by the proliferation of mature adipocytes within the synovial membrane, most commonly affecting the knee joint. MRI is the preferred imaging modality for accurate diagnosis, showing characteristic frond-like synovial projections with fat signal intensity.

The imaging characteristics of lipoma arborescens using plain radiographs, computed tomography (CT), and magnetic resonance imaging (MRI) are described. Design and patients. Five patients with a diagnosis of lipoma arborescens are presented. Three …

Objective: To describe the typical features of lipoma arborescens on MR imaging with pathologic correlation and to evaluate the associated lesions within the joints. Design and patients: The MR imaging findings of 32 patients with the diagnosis of lipoma arborescens of the knee (n=32) and shoulder (n=1) were reviewed.