作者: Poosit Ruengwanichayakun , Marco Gambarotti , Tommaso Frisoni , Dino Gibertoni , Federica Guaraldi
DOI: 10.1016/J.HUMPATH.2019.05.009
关键词: Tibia 、 Parosteal osteosarcoma 、 Osteosarcoma 、 Humerus 、 Surgery 、 Medullary cavity 、 Retrospective analysis 、 Orthopedic surgery 、 Femur 、 Medicine
摘要: Summary Parosteal osteosarcoma is a low-grade malignant bone tumor that can undergo dedifferentiation. The aim of this study was to analyze clinicopathologic features associated with clinical outcome in large cohort patients. Patients consecutively treated for parosteal at Rizzoli Orthopedic Institute from 1900 2018 were reviewed and analyzed. Clincopathologic data 195 patients Age diagnosis ranged 9 75 years (median 31). Median follow-up time 150 months (range, 3-720). most common locations femur (61.5%), humerus (15.9%) tibia (12.8%). Wide surgical margins achieved 125 (64.1%) Medullary involvement present 69 (35.4%) cases. Dedifferentiation occurred 48 (24.6%) Forty-five developed recurrence (23.1%; median 36 months). At last follow-up, 155 (79.5%) alive without evidence disease, 8 (4.1%) active 23 (11.8%) died (4.6%) unrelated causes. dedifferentiated had worse 5-year (65% versus 96%) 10-year survival (60% when compared conventional tumors (P