51-year-old male with lump on medial buttock. Evaluate for perirectal abscess. Limited scan was performed over the visible helpful abnormality. In this location in the subcutaneous tissues there is a poorly marginated, but ovoid hypoechoic region measuring 2.5 x 5.6 x 5.4 cm. This has no fluid component to suggest abscess, and therefore this could represent a somewhat atypical appearing lipoma or other mass.
Masslike area in the subcutaneous tissues of the right buttock without obvious fluid component to suggest abscess. If abscess remains suspected or further soft tissue characterization is required, CT would be useful.