title: Ultrasonographic appearance of gas-containing abscesses in the abdomen.
abstract: This report describes the sonographic appearance of six gas-containing abdominal abscesses. Gas-containing abscesses may appear as densely echogenic masses with acoustical shadowing, but may also be seen merely as regions of acoustical shadowing or as an echogenic mass. A hypothesis is advanced that the appearance of gas-containing abscesses as echogenic masses may be due to a "microbubble" constrast effect.
mesh_terms: D000005:Abdomen; D000009:Abdominal Muscles; D000038:Abscess / Q000175:diagnosis*; D000328:Adult; D000368:Aged; D005260:Female; D005740:Gases; D006801:Humans; D008100:Liver Abscess / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography
chemical_list: D005740:Gases