A Comparison Between Superficial and Deep-Seated Lipomas on High-Resolution Ultrasonography: with RTE and MRI Appearances
Journal Title: Biomedical Journal of Scientific & Technical Research (BJSTR) - Year 2019, Vol 19, Issue 2
Abstract
Soft-tissue lipomas are the most common type of benign mesenchymal tumors and are classified into two types, namely superficial and deep lesions. Superficial, ordinary lipomas occur in the subcutaneous tissues, while deep-seated lipomas occur to the investing fascia. There have been several reports of the superficial lipoma on ultrasonography (US), while a few reports, rare entity, deep-seated lipomas have been studied. In this article, a comparison between superficial and deep-seated lipomas on US features including gray-scale US, color Doppler US and Real-Time Tissue Elastography (RTE) with magnetic resonance image (MRI) appearances was reviewed in detail. The author will suggest that superficial lipoma is usually hyperechoic solid mass without posterior echo enhancement on gray scale US and shows soft nature, having high elasticity on RTE. It is plausible that both superficial and deep-seated lipomas show echogenic lines on grayscale US. The author will suggest that deep-seated lipoma shows moderately soft nature on RTE.In recently years, dermatologic ultrasound imaging has been rapidly developed [1]. DERMUS (Dermatologic Ultrasound), the international working group, was formed and provided the guidelines for performing dermatologic ultrasound examinations [1] and proposed for an assessment training program [2]. Lipoma, common entity is regarded as level 1 content of the training program by DERMUS [2]. Soft-tissue lipomas are the most common type of benign mesenchymal tumors and are classified into two types, namely superficial and deep types. Superficial lipomas occur in the subcutaneous tissues, while deep-seated types occur deep to the investing fascia. Histologically, both subcutaneous and deepseated lipomas are comprised of mature adipose cells. Deep-seated lipomas are less common than ordinary superficial types [3]. In this article, the current knowledge of superficial and deep-seated lipomas on US features including gray-scale US, color Doppler US and RTE with MRI findings will be reviewed in detail.
Authors and Affiliations
Kazumi Fujioka
Keywords
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- EP ID EP621510
- DOI 10.26717/BJSTR.2019.19.003278
- Views 161
- Downloads 0
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