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There is a thin walled ovoid lesion in region of interest (posterior aspect of external ear). It is compressible. There are low level internal echoes without vascularity. There is focal loss of lesion wall near skin (posteriorly) with protrusion of its content in surrounding soft tissue. There is peri-lesional vascularity.
On deeper (or towards anteriorly) side, there is a hypoechoic tract from lesion reaching up to the ear cartilage. Tract is upto 8-10 mm length. Proximal part of tract shows some echoes with air foci. Deeper most tract is empty. Adjacent ear cartilage shows mild thickening. However, there is no obvious cartilage breach.