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Research Article

Regional hyperthermia for soft tissue sarcoma – a survey on current practice, controversies and consensus among 12 European centers

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Article: 2342348 | Received 12 Feb 2024, Accepted 09 Apr 2024, Published online: 23 Apr 2024

Figures & data

Figure 1. Available treatment modalities for STS patients at all participating hyperthermia centers.

Figure 1. Available treatment modalities for STS patients at all participating hyperthermia centers.

Figure 2. Quality assurance guidelines used at centers.

Figure 2. Quality assurance guidelines used at centers.

Figure 3. Treatment aims of RHT. RHT: regional hyperthermia.

Figure 3. Treatment aims of RHT. RHT: regional hyperthermia.

Figure 4. Indications for RHT overall (A), RHT for low-grade tumors (B) and RHT for tumors ≤5cm in size. G: grade; RHT: regional hyperthermia.

Figure 4. Indications for RHT overall (A), RHT for low-grade tumors (B) and RHT for tumors ≤5cm in size. G: grade; RHT: regional hyperthermia.

Figure 5. Chemotherapy and RHT.

Chemotherapy agents combined with RHT (A), total number of chemotherapy cycles concurrent with RHT (B), duration of each RHT with chemotherapy session (C), chemotherapy and RHT timing (C) and weekly chemotherapy with RHT schedule (E). All eight centers applying RHT with chemotherapy responded. CTX = chemotherapy; RHT = regional hyperthermia

Figure 5. Chemotherapy and RHT.Chemotherapy agents combined with RHT (A), total number of chemotherapy cycles concurrent with RHT (B), duration of each RHT with chemotherapy session (C), chemotherapy and RHT timing (C) and weekly chemotherapy with RHT schedule (E). All eight centers applying RHT with chemotherapy responded. CTX = chemotherapy; RHT = regional hyperthermia

Figure 6. Sequence of RHT and chemotherapy (A) and indications for post-op RHT and chemotherapy (B). RHT: regional hyperthermia.

Figure 6. Sequence of RHT and chemotherapy (A) and indications for post-op RHT and chemotherapy (B). RHT: regional hyperthermia.

Figure 7. Radiotherapy and RHT. Radiotherapy with RHT sequence (A), sites for preoperative radiotherapy with RHT (B), indications for postoperative radiotherapy with RHT (C) and number of RHT sessions per week during radiotherapy (D). RHT: regional hyperthermia; RT: radiotherapy.

Figure 7. Radiotherapy and RHT. Radiotherapy with RHT sequence (A), sites for preoperative radiotherapy with RHT (B), indications for postoperative radiotherapy with RHT (C) and number of RHT sessions per week during radiotherapy (D). RHT: regional hyperthermia; RT: radiotherapy.

Figure 8. Contraindications for RHT. RHT: regional hyperthermia.

Figure 8. Contraindications for RHT. RHT: regional hyperthermia.

Figure 9. RHT planning and settings.

Imaging modalities for RHT planning (A), RHT systems in use (B), methods of thermometry (C), intratumoral target temperature (D), maximum temperature accepted in the surrounding healthy tissue (E) and frequency of cardiovascular monitoring during each RHT session (F). CT: computed tomography; MRI: magnetic resonance imaging; RHT: regional hyperthermia.

Figure 9. RHT planning and settings.Imaging modalities for RHT planning (A), RHT systems in use (B), methods of thermometry (C), intratumoral target temperature (D), maximum temperature accepted in the surrounding healthy tissue (E) and frequency of cardiovascular monitoring during each RHT session (F). CT: computed tomography; MRI: magnetic resonance imaging; RHT: regional hyperthermia.
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Data availability statement

Data are available on request from the corresponding author.