title: Pubic osteolysis mimicking a malignant lesion: report a case with a fracture dislocation of the sacroiliac joint.
abstract: We report the case of a 67-year-old woman who presented to our institution with osteoblastic and osteolytic lesions of the pubis and fracture dislocation of the left sacroiliac joint. She had presented 7 months earlier to an outside institution with a left gluteal mass, which had been biopsied and had been believed to represent malignancy. A second biopsy at our institution showed no evidence of malignancy and was felt to represent fracture healing. A diagnosis of public osteolysis was made based on the radiographic and histologic findings. A follow-up radiograph 6 years after presentation revealed healing of the lesions, confirming its benignity.
authors.affiliation: Department of Orthopedic Surgery, Shiga University of Medical Science, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Matsumoto
authors.forename: S
authors.initials: S
authors.lastname: Hukuda
authors.forename: M
authors.initials: M
authors.lastname: Ishizawa
authors.forename: T
authors.initials: T
authors.lastname: Chano
authors.forename: H
authors.initials: H
authors.lastname: Okabe
authors.forename: M
authors.initials: M
authors.lastname: Maeno
mesh_terms: D000368:Aged; D001859:Bone Neoplasms / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D050723:Fractures, Bone / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D004204:Joint Dislocations / Q000150:complications / Q000000981:diagnostic imaging*; D008279:Magnetic Resonance Imaging; D010014:Osteolysis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology; D011630:Pubic Bone; D012446:Sacroiliac Joint / Q000000981:diagnostic imaging / Q000293:injuries*; D014057:Tomography, X-Ray Computed