title: Patterns of soft-tissue tumor extension in and out of the pelvis.
abstract: OBJECTIVE
  The purpose of this article is to present the route of extension in nine soft-tissue tumors and tumorlike lesions of the pelvic wall.
  
  
  CONCLUSIONS
  Soft-tissue tumors of the pelvis, particularly malignant ones, extend into other compartments through specific pathways that are bordered by bones, ligaments, and fasciae. Such pathways include the greater sciatic foramen, the obturator foramen, the femoral canal, the muscular lacuna, the pelvic outlet, and the inguinal canal.
authors.affiliation: Department of Radiology, Iwate Medical University School of Medicine, 19-1 Uchimaru, Morioka, Iwate 020-8505, Japan.
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Sugawara
authors.forename: Shigeru
authors.initials: S
authors.lastname: Ehara
authors.forename: Shin
authors.initials: S
authors.lastname: Hitachi
authors.forename: Kyoji
authors.initials: K
authors.lastname: Okada
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D009221:Myositis Ossificans / Q000175:diagnosis / Q000473:pathology; D009361:Neoplasm Invasiveness; D018205:Neoplasms, Adipose Tissue / Q000175:diagnosis / Q000473:pathology; D018218:Neoplasms, Fibrous Tissue / Q000175:diagnosis / Q000473:pathology; D018317:Nerve Sheath Neoplasms / Q000175:diagnosis / Q000473:pathology; D017253:Neurofibromatoses / Q000175:diagnosis / Q000473:pathology; D010384:Pelvic Bones / Q000033:anatomy & histology / Q000473:pathology; D010386:Pelvic Neoplasms / Q000175:diagnosis* / Q000473:pathology; D012189:Retrospective Studies; D013584:Sarcoma, Synovial / Q000175:diagnosis / Q000473:pathology; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000473:pathology; D014057:Tomography, X-Ray Computed / Q000379:methods