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Kessel, K.A. ; Grosser, R.C.E.* ; Kraus, K.M.* ; Hoffmann, H.* ; Oechsner, M.* ; Combs, S.E.

Stereotactic body radiotherapy (SBRT) in patients with lung metastases-prognostic factors and long-term survival using patient self-reported outcome (PRO).

BMC Cancer 20:442 (2020)

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Objectives The present study aims to evaluate long-term side-effects and outcomes and confirm prognostic factors after stereotactic body radiotherapy (SBRT) of pulmonary lesions. This is the first work that combines the investigated data from patient charts and patient-reported outcome (PRO) up to 14 years after therapy. Materials and methods We analyzed 219 patients and 316 lung metastases treated between 2004 and 2019. The pulmonary lesions received a median dose and dose per fraction of 35 Gy (range: 14-60.5 Gy) and 8 Gy (range: 3-20 Gy) to the surrounding isodose. During the last 1.5 years of monitoring, we added PRO assessment to our follow-up routine. We sent an invitation to a web-based survey questionnaire to all living patients whose last visit was more than 6 months ago. Results Median OS was 27.6 months. Univariate analysis showed a significant influence on OS for KPS >= 90%, small gross tumor volume (GTV) and planning target volume (PTV), the absence of external metastases, <= 3 pulmonary metastases, and controlled primary tumor. The number of pulmonary metastases and age influenced local control (LC) significantly. During follow-up, physicians reported severe side-effects >= grade 3 in only 2.9% within the first 6 months and in 2.5% after 1 year. Acute symptomatic pneumonitis grade 2 was observed in 9.7%, as grade 3 in 0.5%. During PRO assessment, 39 patients were contacted, 38 patients participated, 14 participated twice during follow-up. Patients reported 15 cases of severe side effects (grade >= 3) according to PROCTCAE classification. Severe dyspnea (n = 6) was reported mostly. Conclusion We could confirm excellent local control and low toxicity rates. PROs improve and complement follow-up care. They are an essential measure in addition to the physician-reported outcomes. Future research must be conducted regarding the correct interpretation of PRO data.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Patient-reported Outcome ; Pro ; Outcomes ; Survival ; Toxicity ; Lung Metastasis ; Stereotactic Body Radiotherapy ; Sbrt; Radiation-therapy; Pulmonary Metastases; Colorectal-carcinoma; Experience; Oligometastases

ISSN (print) / ISBN 1471-2407

e-ISSN 1471-2407

Journal BMC Cancer

Quellenangaben Volume: 20, Issue: 1, Article Number: 442

Publisher BioMed Central

Publishing Place Campus, 4 Crinan St, London N1 9xw, England

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Institute of Radiation Medicine (IRM)