open access

Vol 17, No 3 (2012)
Original research articles
Published online: 2012-05-01
Submitted: 2011-09-23
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Long-term follow-up in adult patients with low-grade glioma (WHO II) postoperatively irradiated. Analysis of prognostic factors

Anna Mucha-Małecka, Bogdan Gliński, Marcin Hetnał, Magdalena Jarosz, Jacek Urbański, Beata Frączek-Błachut, Paweł Dymek, Krzysztof Małecki, Agnieszka Chrostowska
DOI: 10.1016/j.rpor.2012.01.007
·
Rep Pract Oncol Radiother 2012;17(3):141-145.

open access

Vol 17, No 3 (2012)
Original research articles
Published online: 2012-05-01
Submitted: 2011-09-23

Abstract

Aim

To report the long-term follow-up of a cohort of adult patients with LGG post-operatively irradiated in one institution, and to identify prognostic factors for progression free survival.

Background

There is little consensus about the optimal treatment for low-grade glioma (LGG), and the clinical management of LGG is one of the most controversial areas in neurooncology. Radiation therapy is one option for treatment of patients with LGG, whereas other options include postoperative observation.

Materials and methods

Between 1975 and 2005, 180 patients with LGG (WHO II) received postoperative irradiation after non radical (subtotal or partial) excision. Patients had to be 18 years of age or older, and have histologic proof of supratentorial fibrillary (FA), protoplasmic (PA) or gemistocytic astrocytoma (GA). Radiotherapy was given within 3–10 weeks after surgery. Treatment fields were localized and included the preoperative tumor volume, with a 1–2[[ce:hsp sp="0.25"/]]cm margin, treated to a total dose of 50–60[[ce:hsp sp="0.25"/]]Gy in 25–30 fractions over 5–6 weeks.

Results

Actuarial ten-year progression free survival (APFS) in the whole group was 19%. The worse prognosis was observed in patients with GA. Ten-year APFS rates for GA, PA and FA were 10%, 18% and 22%, respectively.

Conclusion

The findings from our long-term cohort of 180 patients with LGG confirmed by uni- and multivariate analysis demonstrated that only astrocytoma histology significantly determined the prognosis. The best survival was observed in patients with the fibrillary variant, and the worst for the gemistocytic one.

Abstract

Aim

To report the long-term follow-up of a cohort of adult patients with LGG post-operatively irradiated in one institution, and to identify prognostic factors for progression free survival.

Background

There is little consensus about the optimal treatment for low-grade glioma (LGG), and the clinical management of LGG is one of the most controversial areas in neurooncology. Radiation therapy is one option for treatment of patients with LGG, whereas other options include postoperative observation.

Materials and methods

Between 1975 and 2005, 180 patients with LGG (WHO II) received postoperative irradiation after non radical (subtotal or partial) excision. Patients had to be 18 years of age or older, and have histologic proof of supratentorial fibrillary (FA), protoplasmic (PA) or gemistocytic astrocytoma (GA). Radiotherapy was given within 3–10 weeks after surgery. Treatment fields were localized and included the preoperative tumor volume, with a 1–2[[ce:hsp sp="0.25"/]]cm margin, treated to a total dose of 50–60[[ce:hsp sp="0.25"/]]Gy in 25–30 fractions over 5–6 weeks.

Results

Actuarial ten-year progression free survival (APFS) in the whole group was 19%. The worse prognosis was observed in patients with GA. Ten-year APFS rates for GA, PA and FA were 10%, 18% and 22%, respectively.

Conclusion

The findings from our long-term cohort of 180 patients with LGG confirmed by uni- and multivariate analysis demonstrated that only astrocytoma histology significantly determined the prognosis. The best survival was observed in patients with the fibrillary variant, and the worst for the gemistocytic one.

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Keywords

Low-grade gliomas; Surgery; Radiotherapy

About this article
Title

Long-term follow-up in adult patients with low-grade glioma (WHO II) postoperatively irradiated. Analysis of prognostic factors

Journal

Reports of Practical Oncology and Radiotherapy

Issue

Vol 17, No 3 (2012)

Pages

141-145

Published online

2012-05-01

DOI

10.1016/j.rpor.2012.01.007

Bibliographic record

Rep Pract Oncol Radiother 2012;17(3):141-145.

Keywords

Low-grade gliomas
Surgery
Radiotherapy

Authors

Anna Mucha-Małecka
Bogdan Gliński
Marcin Hetnał
Magdalena Jarosz
Jacek Urbański
Beata Frączek-Błachut
Paweł Dymek
Krzysztof Małecki
Agnieszka Chrostowska

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