The Promising Treatment Schedule of Concurrent Chemoradiotherapy for Stage III Non-small Cell Lung Cancer: Alternative for Conventional Fractionation Using Mathematical Analysis.
Anticancer Res
; 40(7): 4095-4104, 2020 Jul.
Article
in En
| MEDLINE
| ID: mdl-32620658
ABSTRACT
BACKGROUND/AIM:
To evaluate treatment schedules involving concurrent chemoradiotherapy in stage III non-small cell lung cancer (NSCLC) using the tumor control probability (TCP) and normal tissue complication probability (NTCP) parameters. PATIENTS ANDMETHODS:
The standard schedules were compared with two types of schedules, the dose escalation and the short-term schedules. Standard schedules were 60-74 Gy in 30-37 fractions. The dose escalation schedules with hypofractionation and hyperfractionation were 69 Gy in 30 fractions and 69.6 Gy in 58 fractions, respectively, twice per day (b.i.d). The short-term schedules were concomitant boost, 64 Gy in 40 fractions b.i.d. and the accelerated radiotherapy schedule, 57.6 Gy in 36 fractions, three fractions per day (t.i.d).RESULTS:
The average TCP for the short-term schedules was more than 16% in two tumor models; however, the TCP for standard and dose escalation schedules was less than 5%. In each organ, the increase in NTCP for the short-term schedule compared with standard schedules was less than 15%.CONCLUSION:
The short-term schedules had an advantage over standard schedules for NSCLC.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Carcinoma, Non-Small-Cell Lung
/
Dose Fractionation, Radiation
/
Chemoradiotherapy
/
Lung Neoplasms
Limits:
Humans
Language:
En
Journal:
Anticancer Res
Year:
2020
Document type:
Article
Affiliation country:
Japón