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Research ArticleOriginal Article
Open Access

Tissue necrosis after chemotherapy in osteosarcoma as the important prognostic factor

Sam H. Sami, Ali H. Rafati and Parsa Hodjat
Saudi Medical Journal August 2008, 29 (8) 1124-1129;
Sam H. Sami
Department of Orthopedic Surgery, Iran University of Medical Sciences, Iran.
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Ali H. Rafati
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Parsa Hodjat
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Abstract

OBJECTIVE: To determine the histological response to preoperative chemotherapy of the percentage of tumor necrosis, and to assess the relationship between the histological response and the oncological result.

METHODS: Eighty patients with osteosarcoma were managed with preoperative and postoperative chemotherapy and operative resection at Shafa Yahyaeeyan Hospital, Tehran, Iran between 2003-2005. Sections of each operative specimen were examined, and the histological response to chemotherapy was graded. Grade 1 indicated necrosis of 50% of the tumor or less; grade 2, necrosis of more than 50% yet less than 90 percent; grade 3, necrosis of more than 90 percent.

RESULTS: The mean duration of the follow-up of the surviving patients, who were continuously free from disease was 1044 days. The histological response to preoperative chemotherapy (p=0.016) was the most important predictor of event-free survival. The rate of event-free short-term survival for the 80 patients entering this study was 86 percent (69 patients) at 12 months, 50% 24 patients at 24 months, and 21% (5 patients) at 40 months, with 5 patients surviving for a median of 1096 days.

CONCLUSION: The histological response to preoperative chemotherapy is an important clinical predictor of the result of operative treatment of osteosarcoma. This indicator should be used to identify patients who are at high risk for metastasis, as such patients may be candidates for more intensive or novel therapy.

  • Copyright: © Saudi Medical Journal

This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Saudi Medical Journal: 29 (8)
Saudi Medical Journal
Vol. 29, Issue 8
1 Aug 2008
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Tissue necrosis after chemotherapy in osteosarcoma as the important prognostic factor
Sam H. Sami, Ali H. Rafati, Parsa Hodjat
Saudi Medical Journal Aug 2008, 29 (8) 1124-1129;

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Tissue necrosis after chemotherapy in osteosarcoma as the important prognostic factor
Sam H. Sami, Ali H. Rafati, Parsa Hodjat
Saudi Medical Journal Aug 2008, 29 (8) 1124-1129;
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© 2025 Saudi Medical Journal Saudi Medical Journal is copyright under the Berne Convention and the International Copyright Convention.  Saudi Medical Journal is an Open Access journal and articles published are distributed under the terms of the Creative Commons Attribution-NonCommercial License (CC BY-NC). Readers may copy, distribute, and display the work for non-commercial purposes with the proper citation of the original work. Electronic ISSN 1658-3175. Print ISSN 0379-5284.

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