title: Case report: MR findings of a retained surgical sponge.
abstract: We describe here a case in which a retained surgical sponge progressed into the perirenal space and posterior pararenal space from the pelvic cavity. Sonography, CT, and T1-weighted MR image analyses could not show clearly the characteristic structure of the surgical sponge, but T2-weighted MR imaging showed a folded fabric appearance within the cystic mass. Surgical findings confirmed a lobulated cystic mass containing yellowish fluid and a surgical sponge.
authors.affiliation: MR Center, Tenri Hospital, Nara, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Matsuki
authors.forename: M
authors.initials: M
authors.lastname: Matsuo
authors.forename: N
authors.initials: N
authors.lastname: Okada
mesh_terms: D000368:Aged; D005260:Female; D015745:Granuloma, Foreign-Body / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D012187:Retroperitoneal Space; D015503:Surgical Sponges