Figure 3.

US and CT of patient with buttock abscess. Figure (A) demonstrates CT imaging of a patient with a buttock abscess. Note the stranding in the soft tissue with small central abscess cavity (white arrow). (B) demonstrates sonographic imaging of the same patient (long axis orientation) with visualized debris in the dependent portion of the abscess cavity and posterior enhancement deep to the abscess cavity. (C) demonstrates sonographic imaging of tissue lateral to the abscess cavity with branching anechoic wisps surrounding small islands of hyperechoic tissue.