Key result
Sonographic evaluation of fat can reveal hypoechoic collections in various anatomic locations, which is a potential pitfall that can lead to erroneous diagnoses.
Case Report
Recognizing that fat can appear hypoechoic on ultrasound is important to avoid diagnostic errors.
Awareness of hypoechoic fat on ultrasound may avert misdiagnosis; case reports leave open systematic validation.
Fat has classically been described as hyperechoic on sonograms because of its acoustic impedance relative to surrounding tissue, although certain types of fat in certain anatomic locations can be hypoechoic. Examples in the literature include hypoechoic fat in and around the kidneys as well as in ovarian neoplasms [1-3]. We present several cases of hypoechoic fat collections in various anatomic locations to illustrate the importance of its presence and to minimize the number of erroneous diagnoses.
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Spencer et al. (1995) conducted a case report in Hypoechoic fat collections. Sonographic evaluation of hypoechoic fat was evaluated. Sonographic evaluation of fat can reveal hypoechoic collections in various anatomic locations, which is a potential pitfall that can lead to erroneous diagnoses.
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