title: A case of pulmonary metastasis of giant cell tumor of bone presenting as pulmonary arteriovenous malformation.
abstract: Although giant-cell tumor (GCT) of the bone was originally classified as a benign tumor, metastasis has been reported. The radiographic features usually comprise parenchymal solitary or multiple nodules that are round-to-oval nodular opacities of homogeneous density in patients with GCT. However, the patient described in this case presented with a hypervascular mass with feeding vessels and hemothorax, which are common features of pulmonary arteriovenous malformation. To the best of our knowledge, cases of pulmonary metastases presenting as a pulmonary arteriovenous malformation have not been reported. Here, we report a case of giant-cell tumor of the bone that exhibited histologically benign pulmonary metastases and mimicked an arteriovenous malformation.
authors.affiliation: Department of Internal Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Uijeongbu, Republic of Korea.
authors.forename: Chang Dong
authors.initials: CD
authors.lastname: Yeo
authors.affiliation: Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Seoul, Republic of Korea.
authors.forename: Sang Young
authors.initials: SY
authors.lastname: Roh
authors.affiliation: Department of Pathology, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Uijeongbu, Republic of Korea.
authors.forename: Ok Ran
authors.initials: OR
authors.lastname: Shin
authors.affiliation: Department of Orthopaedic Surgery, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Uijeongbu, Republic of Korea.
authors.forename: Won Jong
authors.initials: WJ
authors.lastname: Bahk
authors.affiliation: Department of Internal Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Uijeongbu, Republic of Korea.
authors.forename: Kwan Hyoung
authors.initials: KH
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Uijeongbu, Republic of Korea. Electronic address: medkjw@catholic.ac.kr.
authors.forename: Jin Woo
authors.initials: JW
authors.lastname: Kim
mesh_terms: D000328:Adult; D001164:Arteriovenous Fistula; D001859:Bone Neoplasms / Q000473:pathology*; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging*; D018212:Giant Cell Tumor of Bone / Q000473:pathology*; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D008175:Lung Neoplasms / Q000556:secondary*; D011651:Pulmonary Artery / Q000002:abnormalities; D011667:Pulmonary Veins / Q000002:abnormalities; D014057:Tomography, X-Ray Computed; D055815:Young Adult
keywords: arteriovenous malformation; giant-cell tumor