Abstract
Introduction
To retrospectively analyze the outcome of patients with esophageal cancer treated with neoadjuvant chemoradiation.
Methods
A total of 41 patients received neoadjuvant intent chemoradiation for esophageal cancer. Most patients had a locally advanced disease (T3/4: 82%, N+: 83%, M0: 100%) and squamous cell carcinoma (83%). All patients received concurrent chemotherapy with cisplatin/5-fluorouracil or mitomycin/5-fluorouracil. Median radiation dose was 50.4 Gy in the 25 patients who proceeded to surgery and 57.4 Gy in 16 patients who did not undergo surgery. FDG-PET/CT was used for treatment planning in 24 patients. A second FDG-PET/CT was available for response evaluation in 18 patients.
Results
Median follow-up was 16 months in all patients and 30 months in survivors. Radiotherapy was completed without interruptions >3 days in 90% of patients, and chemotherapy was carried out to >80% in 85% of patients. The 2‑year locoregional control rate was 60%, distant control rate 54% and overall survival rate 50%. Hematological toxicity grade 3/4 was observed in 34%/10% of patients and non-hematological toxicity grade 3/4 in 46%/2% of patients. Perioperative 30-day mortality was 4%. Subgroup analyses revealed that surgery significantly improved locoregional control (74% vs. 39%, p = 0.034), but not the 2‑year survival rate (54% vs. 43%, p = 0.246). In contrast, response based on FDG-PET/CT prior and after chemoradiation significantly predicted improved overall survival (2-year overall survival 61% vs. 40%, p = 0.048).
Conclusion
Outcomes of our cohort were comparable to other series using similar treatments. Surgery significantly improved locoregional control but not survival. Response based on FDG-PET/CT predicted survival and might be used for treatment stratification.
Zusammenfassung
Einleitung
Patienten mit Ösophaguskarzinom wurden nach neoadjuvanter Radiochemotherapie retrospektiv ausgewertet.
Methoden
Insgesamt 41 Patienten mit Ösophaguskarzinom erhielten eine neoadjuvant intendierte Radiochemotherapie. Die meisten Patienten hatten ein lokal fortgeschrittenes Plattenepithelkarzinom des Ösophagus (T3/4: 82 %, N+: 83 %, M0: 100 %). Alle Patienten erhielten eine konkomitante Chemotherapie mit Cisplatin/5-Fluorouracil oder Mitomycin/5-Fluorouracil. Die mediane Gesamtdosis der 25 operierten Patienten betrug 50,4 Gy und die der 16 letztlich definitiv bestrahlten nichtoperierten Patienten 57,4 Gy. Vor Beginn der Radiochemotherapie hatten 24 Patienten eine FDG-PET/CT erhalten und 18 Patienten eine zweite FDG-PET/CT zum Erheben des Ansprechens nach Neoadjuvanz.
Ergebnisse
Die mediane Nachbeobachtungszeit betrug 16 Monate für alle Patienten und 30 Monate für Überlebende. Bei 90 % der Patienten konnte die Strahlentherapie ohne Unterbrechung von >3 Tagen durchgeführt werden und 85 % der Patienten erhielten ≥80 % der vorgesehenen Gesamtdosis an Chemotherapie. Die 2‑Jahres-Lokalkontrollrate lag bei 60 %, die distante Kontrollrate bei 54 % und das Gesamtüberleben bei 50 %. Hämatologische Nebenwirkungen vom Grad 3/4 traten bei 34 %/10 % und nichthämatologische Nebenwirkungen vom Grad 3/4 bei 46 %/2 % auf. Die postoperative 30-Tage-Mortalität betrug 4 %. Subgruppenanalysen ergaben, dass eine Operation signifikant die lokale Kontrolle (74 % vs. 39 %; p = 0,034), nicht aber das 2‑Jahres-Überleben (54 % vs. 43 %; p = 0,246) beeinflusst. Hingegen korreliert ein Ansprechen nach Radiochemotherapie in der FDG-PET/CT positiv mit dem 2‑Jahres-Überleben (61 % vs. 40 %; p = 0,048).
Schlussfolgerung
Die Ergebnisse unserer Kohorte sind vergleichbar mit anderen Studien mit ähnlichen Therapiekonzepten. Die Operation verbesserte signifikant die lokale Kontrolle, nicht aber das Überleben. Ein Ansprechen in der FDG-PET/CT korrelierte positiv mit dem Überleben unserer Patienten und könnte für eine Therapiestratifizierung herangezogen werden.
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N.-S. Hegemann, R. Koepple, F. Walter, D. Boeckle, W.P. Fendler, M.K. Angele, S. Boeck, C. Belka and F. Roeder declare that they have no competing interests.
Ethical standards
This retrospective analysis was performed according to the principles of the Declaration of Helsinki and its subsequent amendments [20]. This retrospective analysis was approved by the local ethics committee. All patients gave written informed consent prior to treatment start.
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Hegemann, NS., Koepple, R., Walter, F. et al. Neoadjuvant chemoradiation for esophageal cancer. Strahlenther Onkol 194, 435–443 (2018). https://doi.org/10.1007/s00066-018-1261-y
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DOI: https://doi.org/10.1007/s00066-018-1261-y