Publications by authors named "Therese Omdahl"

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Overall survival after initial radiotherapy for brain metastases; a population based study of 2140 patients with non-small cell lung cancer.

Acta Oncol 2021 Aug 25;60(8):1054-1060. Epub 2021 May 25.

Department of Oncology, Oslo University Hospital, Oslo, Norway.

Background: Brain metastases (BM) occur in about 30% of all patients with non-small cell lung cancer (NSCLC). BM treatment guidelines recommend more frequent use of stereotactic radiotherapy (SRT). Overall, studies report no difference in overall survival (OS) comparing SRT to whole-brain radiotherapy (WBRT). We examined survival after radiotherapy for BM in a population-based sample from the South-Eastern Norway Regional Health Authority treated 2006-2018.

Methods: We reviewed electronic medical records of 2140 NSCLC patients treated with SRT or WBRT for BM from 2006-2018. Overall survival (OS) was compared to predicted survival according to the prognostic systems DS-GPA and Lung-molGPA.

Results: Use of SRT increased during the period, from 19% (2006-2014) to 45% (2015-2018). Median OS for all patients was 3.0 months, increasing from 2.0 (2006) to 4.0 (2018). Median OS after SRT was 7.0 months ( = 435) and 3.0 months after WBRT ( = 1705). Twenty-seven percent of SRT patients and 50% of WBRT patients died within 90 days after start of RT. Age ≥70, male sex, KPS ≤70, non-adenocarcinoma histology, ECM present, multiple BM, and WBRT were associated with shorter survival ( < .001). Actual mOS corresponded best with predicted mOS by DS-GPA and Lung-molGPA for the SRT group.

Conclusion: Overall survival after radiotherapy (RT) for BM improved during the study period, but only for patients treated with SRT. Survival after WBRT remains poor; its use should be questioned. DS-GPA and Lung-molGPA seem most useful in predicting prognosis considered for SRT.
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http://dx.doi.org/10.1080/0284186X.2021.1924399DOI Listing
August 2021