Clinical manifestations: swelling, no systemic manifestations
Diagnosis Ultrasound Pictures of Lipoma, Fibroma:
x History
x Palpation: doughy, mobile, nontender
x Gradual enlargement may occur; doubts are resolved by FNAB.
Sonographic findings “Ultrasound Pictures” of Lipoma, Fibroma:
x Round or elliptical mass
x Smooth, well-defined margins
x Hypoechoic rim may form as a result of tumor expansion
x Mobile
x Fibroma tends to be hypoechoic.
x Lipoma tends to be echogenic.
Accuracy of sonographic diagnosis: Sonography can clearly demonstrate the individual features of these tumors, but it is prudent to evaluate the lesion by FNAB. If the findings are equivocal, a local excision is indicated.
Lipoma (cursors): rubbery, mobile mass that is hyperechoic to the neck muscles (M)