title: Leiomyosarcoma of the kidney: CT and MR appearance.
abstract: A case of leiomyosarcoma of the kidney is reported here with its CT and MRI manifestations correlated to the pathologic findings. The leiomyosarcoma appeared as a well-defined multinodular mass of varying density and signal intensity on CT and MRI, respectively. The low signal-intensity regions on T2-weighted MRI exhibited delayed enhancement on CT and contained more fibrous tissues than did other sites that had more spindle-shaped muscle cells. Knowledge of the MR and CT characteristics may permit radiologists to refine the diagnosis of renal leiomyosarcoma considerably.
authors.affiliation: Department of Radiology, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Ochiai
authors.forename: H
authors.initials: H
authors.lastname: Onitsuka
authors.forename: H
authors.initials: H
authors.lastname: Honda
authors.forename: K
authors.initials: K
authors.lastname: Kawamoto
authors.forename: J
authors.initials: J
authors.lastname: Uozumi
authors.forename: J
authors.initials: J
authors.lastname: Kumazawa
authors.forename: K
authors.initials: K
authors.lastname: Masuda
mesh_terms: D005260:Female; D006801:Humans; D007668:Kidney / Q000473:pathology*; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D007890:Leiomyosarcoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009392:Nephrectomy; D014057:Tomography, X-Ray Computed