BACKGROUND AND PURPOSE: Radiation pneumonitis (RP) is a restricting complication of non-small-cell lung cancer irradiation. Three-dimensional conformal radiotherapy (3D-CRT) represents an advance because exposure of normal tissues is minimised. This study tries to identify prognostic factors associated with severe RP. MATERIALS AND METHODS: Eighty patients with stage IIIA (20%) and IIIB (80%) NSCLC treated with cisplatin- based induction chemotherapy followed by concurrent chemotherapy and hyperfractionated 3D-CRT (median dose: 72.4 Gy, range: 54.1-85.9) were retrospectively evaluated. Acute and late RP were scored using RTOG glossary. Potential predictive factors evaluated included clinical, therapeutic and dosimetric factors. The lungs were defined as a whole organ. Univariate and multivariate analyses were performed. RESULTS: Early and late RP grade>or=3 were observed in two patients (2%) and 10 patients (12%), respectively. Five patients (6%) died of pulmonary toxicity, 3 of whom had pre-existing chronic obstructive pulmonary disease (COPD). Median time to occurrence of late RP was 4.5 months (range: 3-8). Multivariate analysis showed that COPD (OR=10.1, p=0.01) and NTCPkwa>30% (OR=10.5, p=0.007) were independently associated with late grade>or=3 RP. Incidence of RP>or=3 grade for patients with COPD and/or NTCPkwa>30% was 25% vs. 4% for patients without COPD and NTCPkwa<30% (p=0.01). Risk of severe RP was higher for patients with COPD and/or NTCPkwa>30% (OR=7.3; CI 95%=1.4-37.3, p=0.016). CONCLUSIONS: COPD and NTCP are predictive of severe RP. Careful medical evaluation and meticulous treatment planning are of paramount importance to decrease the incidence of severe RP.
BACKGROUND AND PURPOSE: Radiation pneumonitis (RP) is a restricting complication of non-small-cell lung cancer irradiation. Three-dimensional conformal radiotherapy (3D-CRT) represents an advance because exposure of normal tissues is minimised. This study tries to identify prognostic factors associated with severe RP. MATERIALS AND METHODS: Eighty patients with stage IIIA (20%) and IIIB (80%) NSCLC treated with cisplatin- based induction chemotherapy followed by concurrent chemotherapy and hyperfractionated 3D-CRT (median dose: 72.4 Gy, range: 54.1-85.9) were retrospectively evaluated. Acute and late RP were scored using RTOG glossary. Potential predictive factors evaluated included clinical, therapeutic and dosimetric factors. The lungs were defined as a whole organ. Univariate and multivariate analyses were performed. RESULTS: Early and late RP grade>or=3 were observed in two patients (2%) and 10 patients (12%), respectively. Five patients (6%) died of pulmonary toxicity, 3 of whom had pre-existing chronic obstructive pulmonary disease (COPD). Median time to occurrence of late RP was 4.5 months (range: 3-8). Multivariate analysis showed that COPD (OR=10.1, p=0.01) and NTCPkwa>30% (OR=10.5, p=0.007) were independently associated with late grade>or=3 RP. Incidence of RP>or=3 grade for patients with COPD and/or NTCPkwa>30% was 25% vs. 4% for patients without COPD and NTCPkwa<30% (p=0.01). Risk of severe RP was higher for patients with COPD and/or NTCPkwa>30% (OR=7.3; CI 95%=1.4-37.3, p=0.016). CONCLUSIONS:COPD and NTCP are predictive of severe RP. Careful medical evaluation and meticulous treatment planning are of paramount importance to decrease the incidence of severe RP.
Authors: David G Pfister; David H Johnson; Christopher G Azzoli; William Sause; Thomas J Smith; Sherman Baker; Jemi Olak; Diane Stover; John R Strawn; Andrew T Turrisi; Mark R Somerfield Journal: J Clin Oncol Date: 2003-12-22 Impact factor: 44.544
Authors: S Bahri; J C Flickinger; A M Kalend; M Deutsch; C P Belani; F C Sciurba; J D Luketich; J S Greenberger Journal: Radiat Oncol Investig Date: 1999
Authors: K Furuse; M Fukuoka; M Kawahara; H Nishikawa; Y Takada; S Kudoh; N Katagami; Y Ariyoshi Journal: J Clin Oncol Date: 1999-09 Impact factor: 44.544
Authors: X L Fu; H Huang; G Bentel; R Clough; R L Jirtle; F M Kong; L B Marks; M S Anscher Journal: Int J Radiat Oncol Biol Phys Date: 2001-07-15 Impact factor: 7.038
Authors: H Choy; R F Devore; K R Hande; L L Porter; P Rosenblatt; F Yunus; L Schlabach; C Smith; Y Shyr; D H Johnson Journal: Int J Radiat Oncol Biol Phys Date: 2000-07-01 Impact factor: 7.038
Authors: David A Palma; Suresh Senan; Kayoko Tsujino; Robert B Barriger; Ramesh Rengan; Marta Moreno; Jeffrey D Bradley; Tae Hyun Kim; Sara Ramella; Lawrence B Marks; Luigi De Petris; Larry Stitt; George Rodrigues Journal: Int J Radiat Oncol Biol Phys Date: 2012-06-09 Impact factor: 7.038