Dae Geun Jeon

..This study examined whether the results of a pasteurized autologous bone graft are comparable to other reconstruction methods with regard to the graft survival and the functional outcome...

..Known risk factors (surgical margin, tumor necrosis) of local recurrence (LR) in osteosarcoma are determined by results available after surgery. However, relations between preoperative characteristics and LR have not been clearly defined...

..The poor prognosis of pelvic osteosarcoma is well recognized, but the cause of this prognosis has not been well defined...

..Little is known about the clinical outcome or prognosis of diaphyseal osteosarcoma treated with modern therapeutic strategies...

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..In the revised AJCC staging system a maximal tumor diameter of 8 cm was adopted as a cutoff for the subdivision of IIA and IIB osteosarcoma, but this cutoff was chosen based on limited information...

..We examined the survivorship and functional outcome of the pasteurized autograft-prosthesis composite for distal femoral osteosarcoma. We also evaluated complications including nonunion, loosening, bony resorption, infection, and fracture...

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..Most metastatic events occurred within 2 years after diagnosis; therefore, we recommend new predictive strategies and followup protocol for patients experiencing late relapse...

..Controversy exists about the treatment outcomes of the Ewing sarcoma family of tumors among low-incidence populations. We evaluated whether Korean Ewing sarcoma family of tumors patients have poorer outcomes than Euro-American patients...

..Unplanned primary surgery has been known to have a negative prognostic impact in osteosarcoma...

..Wide excision is considered the standard treatment for high-grade chondrosarcoma, but little is known regarding the effect of curettage on patient outcome in grade 2 chondrosarcoma...

..In this retrospective study, we assessed the plain-film radiographic patterns of American Joint Committee on Cancer (AJCC) stage II osteosarcoma and analyzed the relationship between these patterns and clinicopathologic variables...

..However, reconstruction after periacetabular resection is complicated and challenging...

..We aimed to understand the biology of osteosarcoma of the flat bone, which is a rare tumor entity...

..Residual tumor tissue as a result of unplanned excision of soft tissue sarcoma is a risk factor for local recurrence...

..Further investigations are needed to clarify the precise effects of infection...

..Our results suggest reconstruction with pasteurized autograft is a simple and easily accessible method in limb salvage and an economic alternative to allograft, with low rates of ultimate failure and graft-related complications...

..We asked: (1) Is resection amount related to prosthetic infection? (2) What other risk factors are related with infection? (3) What are the survivorship and functional outcomes of proximal tibial endoprosthetic reconstruction?..

..We hypothesized patients with this risk factor will have similar survival regardless of the development of local recurrence...

..Patients with malignant fibrous histiocytoma of bone (MFH-B) and osteosarcoma reportedly have comparable survival rates, despite the lesser chemosensitivity of patients with MFH-B compared with those with osteosarcoma...

..The purpose of this study is to evaluate the risk of subsequent local recurrence (LR) and survival of parosteal osteosarcoma (POS) patients who underwent re-excision after intralesional excision...

..Previous reports on the correlation between the amount of bone resection and prosthetic failure might be confounded by variability in the amount of soft tissue resected and by the mode of prosthesis fixation...

..There are various alternatives to address this problem. We describe a three-stage procedure: (1) temporary arthrodesis, (2) lengthening by Ilizarov apparatus, and (3) tumor prosthesis...

..The correlation between [(18) F]FDG PET SUVmax values and histologic response to preoperative chemotherapy was also assessed prospectively using PET/MRI...

..An acceptable intermediate term result was achieved...

..In addition, we also evaluated the relationship between patient outcome and tumor growth pattern in the whole study cohort and in subsets of AJCC IIA and IIB patients...

..Here, the focus is placed mainly on the reappraisal of previous mass chemotherapy trials and prognostic factors, in the hope of contriving a strategy to overcome the current stasis...

..The negative prognostic role of pathologic fracture in osteosarcoma is not determined, as previous case-control and retrospective cohort studies have produced contradictory results...