Rippenfrakturen nach Rebestrahlung kombiniert mit Hyperthermie bei rezidiviertem Brustkrebs: Prognostische Faktoren

Sabine Oldenborg, Christel Valk, Rob van Os, Bing Oei, Jack Venselaar, Paul Zum V. rde Sive Vörding, Adriënne van Randen, Hans Crezee, Geertjan van Tienhoven, Coen Rasch

Research output: Contribution to journalArticleProfessional

Abstract

Background: Combining reirradiation (reRT) and hyperthermia (HT) has shown high therapeutic value for patients with locoregional recurrent breast cancer (LR). However, additional toxicity of reirradiation (e.g., rib fractures) may occur. The aim of this study is to determine the impact of potential risk factors on the occurrence of rib fractures. Patients and methods: From 1982–2005, 234 patients were treated with adjuvant reRT + HT after surgery for LR. ReRT consisted typically of 8 fractions of 4 Gy twice a week, or 12 fractions of 3 Gy four times a week. A total of 118 patients were irradiated with abutted photon and electron fields. In all, 60 patients were irradiated using either one or alternating combinations of abutted AP electron fields. Hyperthermia was given once or twice a week. Results: The 5-year infield local control (LC) rate was 70 %. Rib fractures were detected in 16 of 234 patients (actuarial risk: 7 % at 5 years). All rib fractures occurred in patients treated with a combination of photon and abutted electron fields (p = 0.000); in 15 of 16 patients fractures were located in the abutment regions. The other significant predictive factors for rib fractures were a higher fraction dose (p = 0.040), large RT fields, and treatment before the year 2000. Discussion and conclusion: ReRT + HT results in long-term LC. The majority of rib fractures were located in the photon/electron abutment area, emphasizing the disadvantage of field overlap. Large abutted photon/electron fields combined with 4 Gy fractions increase the number of rib fractures in this study group. However, as these factors were highly correlated no relative importance of the individual factors could be estimated. Increasing the number of HT sessions a week does not increase the risk of rib fractures.
Original languageGerman
Pages (from-to)240-247
JournalStrahlentherapie und Onkologie
Volume192
Issue number4
DOIs
Publication statusPublished - 2016
Externally publishedYes

Cite this

Oldenborg, S., Valk, C., van Os, R., Oei, B., Venselaar, J., Vörding, P. Z. V. R. S., ... Rasch, C. (2016). Rippenfrakturen nach Rebestrahlung kombiniert mit Hyperthermie bei rezidiviertem Brustkrebs: Prognostische Faktoren. Strahlentherapie und Onkologie, 192(4), 240-247. https://doi.org/10.1007/s00066-016-0946-3