title: The chordoma arised from ilium: A rare case report.
abstract: Chordomas are malignant tumors that originate in embryonic notochordal remnants. The sacrum and skull are the most common sites; the mobile spine and other bones are extremely rare sites. We describe a 45-year-old man who presented with a lytic lesion in his left ilium. Imaging and pathology of a biopsy specimen suggested a malignant bone tumor; wide resection was accordingly performed. The morphology and immunohistochemistry of the operative specimen showed obvious characteristics of classic chordoma. To our knowledge, this is the first reported case of a chordoma originating in the ilium. Chordoma should therefore be considered in the differential diagnosis of lytic lesions in the ilium.
authors.affiliation: Department of Orthopedic Oncology Surgery, Beijing Ji Shui Tan Hospital, Peking University, Beijing, People's Republic of China.
authors.forename: Yongkun
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Department of Orthopedic Oncology Surgery, Beijing Ji Shui Tan Hospital, Peking University, Beijing, People's Republic of China.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Niu
authors.affiliation: Department of pathology, Beijing Ji Shui Tan Hospital, Peking University, Beijing, People's Republic of China.
authors.forename: Lan
authors.initials: L
authors.lastname: Li
authors.affiliation: Department of pathology, Beijing Ji Shui Tan Hospital, Peking University, Beijing, People's Republic of China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Ding
keywords: Atypical site; Chordoma; Diagnosis; Ilium; Treatment