24-year-old female post muscle biopsy left thigh with drainage and pain at site. There is a complex fluid collection in the deeper subcutaneous tissues at the site of biopsy measuring 1.4 x 1.8 x 5 cm. This contains internal septation and focally echogenic areas. No gross, peripheral flow by color Doppler.
Fluid collection left left thigh. This may represent hematoma, although abscess or other fluid collection cannot be excluded.