Combined treatment of rectal cancer with moderate risk of tumor progression

OBJECTIVE: To increase the effectiveness of combined treatment in patients with rectal cancer and moderate risk of progression based on the concept of polyradiomodification (PRM).

MATERIAL AND METHODS: The study included 337 patients with rectal cancer and moderate risk of tumor progression. A short course of radiotherapy (cRT) (5x5 Gy) combined with several radiomodifiers (cRT+PRM) was performed in 147 (43.6%) patients. Other 190 (56.4%) patients underwent cRT. The following radio modifiers were used: three-time application of local microwave hyperthermia (Yacht-3 or Yacht-4 devices), two-time intrarectal delivery of a biopolymer composition with Metronidazole before the 3rd and 5th irradiation sessions and two-week oral administration of Capecitabine (Xeloda) at a daily dose of 2.0 g/m2. Surgery was performed in 4-6 weeks after radiotherapy.

RESULTS: CRT+PRM program increased 5-year relapse-free survival up to 81.3% compared to 60.3% after cRT alone (p=0.0003) due to significant reduction of the incidence of cancer recurrence from 8.4% to 0.7% (p=0.0013). More effective local growth control expanded the indications for sphincter-sparing surgery. These procedures were performed in 89.1% and 70.5% of patients, respectively (p=0.00001). In the cRT+PRM group, sphincter-sparing surgery reduced incidence of cancer recurrence from 13.7% to 0.8% (p=0.0110), distant metastases - from 23.9% to 13.7% (p=0.00349).

CONCLUSION: Radiomodification in neoadjuvant radiotherapy is justified in patients with moderate risk of tumor progression, improves long-term results and increases the incidence of sphincter-sparing surgery.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - year:2022

Enthalten in:

Khirurgiia - (2022), 12. Vyp. 2 vom: 09., Seite 36-43

Sprache:

Russisch

Weiterer Titel:

Rezul'taty primeneniya kombinirovannogo metoda lecheniya bol'nykh rakom pryamoi kishki so srednim riskom progressirovaniya opukholevogo protsessa

Beteiligte Personen:

Barsukov, Yu A [VerfasserIn]
Tkachev, S I [VerfasserIn]
Mamedli, Z Z [VerfasserIn]
Aliev, V A [VerfasserIn]
Vlasov, O A [VerfasserIn]
Perevoshchikov, A G [VerfasserIn]
Oltarzhevskaya, N D [VerfasserIn]
Korovina, M A [VerfasserIn]
Dudaev, Z A [VerfasserIn]
Ovchinnikova, A I [VerfasserIn]

Links:

Volltext

Themen:

Combined treatment
English Abstract
Journal Article
Long-term treatment outcomes
Radiomodifiers
Rectal cancer
Risk factors of progression
Therapeutic pathomorphosis

Anmerkungen:

Date Completed 27.12.2022

Date Revised 30.12.2022

published: Print

Citation Status MEDLINE

doi:

10.17116/hirurgia202212236

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM350741840