Research Article

Survival analysis and the effects of prognostic factors in patients treated for osteosarcoma

Volume: 41 Number: 3 September 4, 2007
  • Harzem Ozger
  • Levent Eralp
  • Ata Atalar
  • Berkin Toker
  • Inci Ayan
  • Rejin Kebudi
  • Sevil Bagbek
  • Mert Basaran
  • Fulya Agaoglu
  • Yavuz Dizdar
  • Bilge Bilgic
TR EN

Survival analysis and the effects of prognostic factors in patients treated for osteosarcoma

Abstract

Objectives: We evaluated long-term treatment results of patients with primary osteosarcoma and the effect of prognostic factors on overall survival and disease-free survival. Methods: Between 1995 and 2005, 180 patients (111 males, 69 females; mean age 21±10 years; range 7 to 64 years) were treated for primary osteosarcoma. Overall and disease-free survival rates were analyzed for 165 patients with high-grade osteosarcoma with the Kaplan-Meier method. The effects of potential prognostic factors were assessed, including age, gender, localization, tumor size, primary metastasis on presentation, the presence of pathologic fractures, necrosis rate, and infection. All the patients received chemotherapy before and after surgery. The mean follow-up period was 49.7 months (range 6 to 185) months. Results: Sixty-nine patients were below 16 years of age. The most frequent involvement was in the distal femur (47.2%), followed by the proximal tibia (25%). Sixteen patients presented with a pathologic fracture, and 12 patients with metastasis. The median tumor size was 10 cm. The overall five- and 10-year survival rates were 68% and 60%, and disease-free survival rates were 50% and 44%, respectively. Only the presence of a pathologic fracture and primary metastasis on presentation were found to affect prognosis. Conclusion: The two conditions, primary metastasis and a pathologic fracture, found as the most important prognostic factors in our study are mainly associated with late presentation. As in every malignant disease, early admission would provide better survival rates.

Keywords

Details

Primary Language

English

Subjects

Health Care Administration

Journal Section

Research Article

Authors

Harzem Ozger This is me

Levent Eralp This is me

Ata Atalar This is me

Berkin Toker This is me

Inci Ayan This is me

Rejin Kebudi This is me

Sevil Bagbek This is me

Mert Basaran This is me

Fulya Agaoglu This is me

Yavuz Dizdar This is me

Bilge Bilgic This is me

Publication Date

September 4, 2007

Submission Date

May 10, 2014

Acceptance Date

-

Published in Issue

Year 2007 Volume: 41 Number: 3

APA
Ozger, H., Eralp, L., Atalar, A., Toker, B., Ayan, I., Kebudi, R., Bagbek, S., Basaran, M., Agaoglu, F., Dizdar, Y., & Bilgic, B. (2007). Survival analysis and the effects of prognostic factors in patients treated for osteosarcoma. Acta Orthopaedica et Traumatologica Turcica, 41(3), 211-219. https://izlik.org/JA93EX55KR
AMA
1.Ozger H, Eralp L, Atalar A, et al. Survival analysis and the effects of prognostic factors in patients treated for osteosarcoma. Acta Orthopaedica et Traumatologica Turcica. 2007;41(3):211-219. https://izlik.org/JA93EX55KR
Chicago
Ozger, Harzem, Levent Eralp, Ata Atalar, et al. 2007. “Survival Analysis and the Effects of Prognostic Factors in Patients Treated for Osteosarcoma”. Acta Orthopaedica et Traumatologica Turcica 41 (3): 211-19. https://izlik.org/JA93EX55KR.
EndNote
Ozger H, Eralp L, Atalar A, Toker B, Ayan I, Kebudi R, Bagbek S, Basaran M, Agaoglu F, Dizdar Y, Bilgic B (September 1, 2007) Survival analysis and the effects of prognostic factors in patients treated for osteosarcoma. Acta Orthopaedica et Traumatologica Turcica 41 3 211–219.
IEEE
[1]H. Ozger et al., “Survival analysis and the effects of prognostic factors in patients treated for osteosarcoma”, Acta Orthopaedica et Traumatologica Turcica, vol. 41, no. 3, pp. 211–219, Sept. 2007, [Online]. Available: https://izlik.org/JA93EX55KR
ISNAD
Ozger, Harzem - Eralp, Levent - Atalar, Ata - Toker, Berkin - Ayan, Inci - Kebudi, Rejin - Bagbek, Sevil et al. “Survival Analysis and the Effects of Prognostic Factors in Patients Treated for Osteosarcoma”. Acta Orthopaedica et Traumatologica Turcica 41/3 (September 1, 2007): 211-219. https://izlik.org/JA93EX55KR.
JAMA
1.Ozger H, Eralp L, Atalar A, Toker B, Ayan I, Kebudi R, Bagbek S, Basaran M, Agaoglu F, Dizdar Y, Bilgic B. Survival analysis and the effects of prognostic factors in patients treated for osteosarcoma. Acta Orthopaedica et Traumatologica Turcica. 2007;41:211–219.
MLA
Ozger, Harzem, et al. “Survival Analysis and the Effects of Prognostic Factors in Patients Treated for Osteosarcoma”. Acta Orthopaedica et Traumatologica Turcica, vol. 41, no. 3, Sept. 2007, pp. 211-9, https://izlik.org/JA93EX55KR.
Vancouver
1.Harzem Ozger, Levent Eralp, Ata Atalar, Berkin Toker, Inci Ayan, Rejin Kebudi, Sevil Bagbek, Mert Basaran, Fulya Agaoglu, Yavuz Dizdar, Bilge Bilgic. Survival analysis and the effects of prognostic factors in patients treated for osteosarcoma. Acta Orthopaedica et Traumatologica Turcica [Internet]. 2007 Sep. 1;41(3):211-9. Available from: https://izlik.org/JA93EX55KR