What is an angiolipoma? An angiolipoma is a vascular lipoma or hamartoma variant that one should consider when a small hyperechoic mass is present within the subcutaneous tissues. It is usually a small, slow-growing lesion that is most common in young men and may be painful and multiple approximately 50% of the time.
What is fat necrosis? Subcutaneous fat necrosis is a benign process that often presents as a palpable subcutaneous nodule on the extremities or torso with or without an antecedent event. Two typical sonographic appearances have been ascribed to fat necrosis located within the subcutaneous soft tissues. The first is a well-defined isoechoic mass with a …
What is an angiolipoma? An angiolipoma is a vascular lipoma or hamartoma variant that one should consider when a small hyperechoic mass is present within the subcutaneous tissues. It is usually a small, slow-growing lesion that is most common in young men and may be painful and multiple approximately 50% of the time.
What is the sonographic appearance of a lipoma? Soft tissue lipomas may arise anywhere including within muscle, between tissue planes, or in subcutaneous fat. A lipoma residing in the subcutaneous tissue should be oval and homogeneously isoechoic or minimally hyperechoic. It is important to keep in mind that a simple lipoma does not have blood …
How can a ganglion cyst be differentiated from a parameniscal cyst on Ultrasound? Ganglion cysts may have a variety of appearances at US, but are noncompressible, are in close proximity to a tendon or joint, and do not have vascularity on Doppler imaging. Large ganglion cysts, defined as greater than 10 mm, often demonstrate the classic …
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How can Ultrasound differentiate between a ganglion cyst and a bursa? Ganglion cysts associated with a tendon sheath (or joint) may appear unilocular or multilocular with multiple internal septations, and this appearance is not uncommon about the ankle, foot, wrist, and hand tendons. This unilocular appearance of a ganglion cyst may be differentiated from a …
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Which soft tissue masses can be diagnosed on Ultrasound? Although US findings are often nonspecific for the characterization of soft tissue masses, there are several instances in which US is diagnostic. US is very helpful at differentiating cystic from solid masses. A simple cyst should appear anechoic on US with increased through transmission and thin, …
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