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  • Title: Radiographic manifestations and pathologic basis of parosteal osteosarcoma. Analysis of 17 cases.
    Author: Duan CX, Zhuang BZ, Liu XT.
    Journal: Chin Med J (Engl); 1991 Nov; 104(11):954-9. PubMed ID: 1800039.
    Abstract:
    The authors reviewed the radiographic manifestations of 17 cases of parosteal osteosarcoma, with pathologic correlation in 15. There were two types of parosteal osteosarcoma radiologically. The majority of cases were type I with uniformly dense masses which had regular borders. They often adhered to the cortex and showed no evidence of soft-tissue invasion which correlated with low-grade pathologic malignancy and a relatively benign clinical course. Type II involved the bone, soft-tissue and the medullary cavity. These lesions were poorly differentiated and frequently accompanied by metastatic lesions.
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