PMC8492260_01
A 20-year-female who presented with gradual neck swelling and mild pain for 4 months. Sagittal grayscale ultrasonography image showing well-defined thick-walled cystic lesion (arrow) in the intramuscular plane in the distal SCM (asterisk) with eccentric hyperechoic foci (arrowhead) within the cavity and surrounding edematous changes.
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fig1
An eccentric tiny hyperechoic focus (scolex) was seen within the lesion (Figure 1).
Axial noncontrast computed tomography image of the neck at the level of T1 vertebra showing slightly hypodense cystic lesion with a small area of hyperdensity within the lesion (arrow).
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fig2
Noncontrast computed tomography (CT) scan of the brain was normal; whereas, the neck showed an ill-defined hypodense lesion in the right sternocleidomastoid muscle with a tiny eccentric hyperdense focus within it, which was suggestive of the scolex (Figure 2).