title: OSTEOID OSTEOMA IN THE ILIAC BONE: REPORT ON TWO CASES.
abstract: Osteoid osteoma is a benign bone tumor that generally presents with nighttime pain among young adults and is relieved by rest and salicylates. It can affect any bone, but occurrences in the iliac are unusual. The authors describe two cases of intramedullary osteoid osteoma next to the sacroiliac joint, with symptoms that simulated sciatic pain. The cases were diagnosed late, although the initial radiographs showed sclerotic lesions in both cases. The diagnosis was confirmed by means of CT scan and the nidus was excised surgically through en bloc resection. The definitive diagnosis was given by means of histopathological examination. Over long-term follow-up, both cases remained asymptomatic and complete bone remodeling at the surgical site was observed. The authors highlight the typical characteristics of the tumor, the unusual location, the differential diagnosis and the treatment.
authors.affiliation: Specialist in Orthopedics and Traumatology; Supervisor of the Medical Residence Program in Orthopedics and Traumatology, Department of Orthopedics and Traumatology, University Hospital, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil.
authors.forename: Elmano
authors.initials: E
authors.lastname: de Araújo Loures
authors.affiliation: Resident in the Department of Orthopedics and Traumatology, University Hospital, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil.
authors.forename: Bruno Fajardo
authors.initials: BF
authors.lastname: do Nascimento
authors.affiliation: Resident in the Department of Orthopedics and Traumatology, University Hospital, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil.
authors.forename: Marcelo
authors.initials: M
authors.lastname: de Carvalho Amorim
authors.affiliation: Undergraduate Medical Student, Department of Morphology, Institute of Biological Sciences and School of Medicine, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil.
authors.forename: Clarice Naya
authors.initials: CN
authors.lastname: Loures
keywords: Bone Neoplasms; Ilium; Osteoma, Osteoid; Sacroiliac Joint