Elsevier

European Journal of Cancer

Volume 39, Issue 14, September 2003, Pages 2050-2057
European Journal of Cancer

Recurrences following primary osteosarcoma in adolescents and adults previously treated with chemotherapy

https://doi.org/10.1016/S0959-8049(03)00435-0Get rights and content

Abstract

In this retrospective analysis, we report on the detailed management of 33 recurrent osteosarcoma patients from a population of 81 adolescents and adults previously treated (between November 1979 and November 1998) at the La Timone Adults Hospital, for an extremity-localised osteosarcoma. The site of the first recurrence was limited to the lung in 24 patients (73%), was local in 4 patients (12%), at multiple sites in 4 patients (12%), and limited to the bone for 1 patient (3%). The median interval between the diagnosis of the primary osteosarcoma and the first recurrence was 16 months (range 4–108 months). For all patients, the treatment combined aggressive chemotherapy and surgical resection of the recurrences whenever possible. 19 patients (58%) achieved a second complete remission. The median follow-up time from the first recurrence was 18 months (range 4–150 months). For all patients, the median overall survival from first recurrence was 17 months (95% confidence interval (CI), 11–22 months) and the projected 3- and 5-year survival rates were 31.6 and 23.7%, respectively. Patients with a second complete remission had a better 5-year survival than patients without (44.6% versus 0%, P=0.001). The achievement of a second complete remission has an independent significant prognostic value for an improved survival. Aggressive surgery with the removal of recurrence sites combined with multi-agent chemotherapy can either cure patients with recurrent osteosarcoma or significantly prolong their survival.

Introduction

With the advent of aggressive chemotherapy, the long-term survival of patients with high-grade osteosarcoma has improved considerably 1, 2, 3, 4, 5. However, despite the success of combined surgical and chemotherapeutic modalities, 30–40% of patients develop lung metastases or local recurrences. Studies on the management of patients who relapse are very limited in number 6, 7, 8 and mainly concern patients with pulmonary metastases 9, 10, 11, 12, 13, 14, 15, 16. An aggressive pulmonary metastasectomy is at present an accepted treatment strategy, with good results in patients with metastases confined to the lung 9, 10, 11, 12, 13, 14, 15, 16, whereas the value of second-line chemotherapy treatment 7, 9, 10, 14, 15 and the best treatment strategy for those patients with recurrences other than in the lung 8, 7 are not well defined. Nevertheless, since the introduction of effective chemotherapy for osteosarcoma 17, 18, 19, a more aggressive multidisciplinary approach to treat patients with metastatic disease has evolved, and the use of second-line chemotherapy treatment with resection of the recurrence is quite common 6, 7, 9, 10, 11, 12, 14, 15.

We report on a retrospective analysis of 33 adolescent and adult patients who developed metastases or local recurrences from extremity-localised high-grade osteosarcomas. We examine the pattern of recurrence, various treatment methods and results, with particular emphasis on the prognostic impact of previous treatment type, salvage surgery (‘metastasectomy’) and second-line chemotherapy.

Section snippets

Patients

From November 1979 to November 1998, 81 patients with histologically-proven high-grade osteosarcoma of the extremities were treated at the Oncology Unit of la Timone Adults University Hospital. All were initially free of metastatic disease. There were 51 males and 30 females.

At initial presentation, the absence of metastases at diagnosis was routinely ascertained by bone scans for all patients, conventional lung tomography prior to 1983, and by computed tomography (CT) scans of the chest

Patterns of recurrence

Patients' characteristics and sites of recurrence are presented in Table 1. 33 patients, 26 males and 7 females, were entered into this study. 7 patients (37%) relapsed after being given period 1 chemotherapy, 8 (50%) relapsed after period 2 (SO83) chemotherapy, and 18 (39%) after completing the T-10-derived protocol; this was not significantly different (P>0.05). The median age at the time of diagnosis of the primary tumours was 20 years (range 12–55 years). The median intervals from the

Discussion

Before the use of adjuvant chemotherapy, lung metastases appeared in more than 90% of patients 5–8 months after surgical treatment for primary osteosarcoma 15, 19, 25. With intensive chemotherapy, the long-term disease-free survival rate for localised high-grade osteosarcoma improved from less than 20% to the 55–75% range 3, 5, 26, 27, 28, 29. However, 30–40% of patients still relapse, most often with pulmonary metastases, but after a longer median disease-free interval of 10–17 months 15, 25,

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