title: [CT and sonographic diagnosis of retained surgical sponge].
abstract: Seven cases of pathologically proven retained surgical sponge were reviewed and classified into four types, depending on CT and US findings. Type I: CT shows a mass with tiny gas bubbles, and sonogram shows an echogenic area with strong posterior shadow. Type II: CT shows an irregular high density mass with no gas bubble, and sonogram shows an echogenic area with strong posterior shadow. Type III: CT shows a low density mass with irregular internal high density areas, and sonogram shows a cystic mass with zigzag internal components. Type IV: CT shows an elliptic high density mass with low density area internally. Judging from the experiment and operative findings, these patterns were decided by the number and status of the gauze, volume of the exudate and hematoma, and status of the granulation. The author concludes that these characteristic CT and US findings, together with a history of surgery, permit the correct diagnosis of retained surgical sponge.
authors.affiliation: Department of Radiology, Medical College of Oita.
authors.forename: S
authors.initials: S
authors.lastname: Matsumoto
authors.forename: H
authors.initials: H
authors.lastname: Aikawa
authors.forename: H
authors.initials: H
authors.lastname: Miyake
authors.forename: H
authors.initials: H
authors.lastname: Mori
authors.forename: T
authors.initials: T
authors.lastname: Maeda
authors.forename: H
authors.initials: H
authors.lastname: Nishimura
authors.forename: Y
authors.initials: Y
authors.lastname: Monzen
authors.forename: A
authors.initials: A
authors.lastname: Ashizawa
authors.forename: I
authors.initials: I
authors.lastname: Isomoto
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005547:Foreign Bodies / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D015503:Surgical Sponges; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography