Fig. 8

Subcutaneous abscess vs. hematoma of the axilla. A small, irregular-in-shape, fluid collection (white asterisk) can be identified within the axillary subcutaneous tissue (SUBC) not extending to the overlying dermo-epidermal complex (yellow arrowheads) nor to the underlying muscle planes (A); and high-sensitivity color Doppler shows intense hypervascularization of the surrounding soft tissues confirming inflammatory/infectious local phenomena (B). Of note, axillary hematoma (yellow asterisks) can present a sonographic pattern mimicking an abscess (C), but vascular signals are usually absent within the surrounding fat pad (D). White arrowhead: posterior acoustic enhancement