title: Case report: MR appearance of a retained surgical sponge.
abstract: A case of a retained surgical sponge found in the retroperitoneum is presented with findings on magnetic resonance (MR) imaging, computed tomography (CT), ultrasonography (US) and angiography. Among all the performed modalities, a characteristic internal structure of the gauze granuloma was best visualized on MR imaging. If no radio-opaque marker is seen on plain radiography or CT, the folded fabric inner structure visualized on T2-weighted images can be a most important clue to the correct diagnosis of this iatrogenic mass.
authors.affiliation: Department of Radiology, Seirei Mikatabara General Hospital, Hamamatsu, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Mochizuki
authors.forename: Y
authors.initials: Y
authors.lastname: Takehara
authors.forename: K
authors.initials: K
authors.lastname: Ichijo
authors.forename: T
authors.initials: T
authors.lastname: Nishimura
authors.forename: M
authors.initials: M
authors.lastname: Takahashi
authors.forename: M
authors.initials: M
authors.lastname: Kaneko
mesh_terms: D005260:Female; D005547:Foreign Bodies / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D012187:Retroperitoneal Space; D015503:Surgical Sponges