Biomaterial Database

Relationship Between Radiation Pneumonitis Following Definitive Radiotherapy for Non-small Cell Lung Cancer and Isodose Line. 2021

Shigenobu Watanabe, and Ichiro Ogino, and Daisuke Shigenaga, and Masaharu Hata

Department of Radiation Oncology, Yokohama City University Medical Center, Yokohama, Japan; wata_s@yokohama-cu.ac.jp.

OBJECTIVE It is important to identify radiation pneumonitis above Common Terminology Criteria for Adverse Events Grade 2 (G2) in order to safely continue durvalumab maintenance after chemoradiotherapy for advanced lung cancer. The aim of this study was to discover factors that predict pneumonitis above G2. METHODS A follow-up computed tomography (CT) image was superimposed on the planning CT image using deformable image registration (DIR). The pneumonitis area was contoured on follow-up CT after DIR and the dose-volume histogram parameters of the contoured pneumonitis area were calculated. RESULTS V5 (Percentage of total volume receiving ≥5 Gy) to V50 of pneumonitis were significantly lower in patients with G2 pneumonitis than in those with G1 pneumonitis. The pneumonitis V15 was the most significant. The group with pneumonitis V15 <87.10% had significantly more G2 pneumonitis than the group with pneumonitis V15 ≥87.10%. CONCLUSIONS Pneumonitis V15 <87.10% was a risk factor for G2 pneumonitis.

UI	MeSH Term	Description	Entries
D008175	Lung Neoplasms	Tumors or cancer of the LUNG.	Cancer of Lung,Lung Cancer,Pulmonary Cancer,Pulmonary Neoplasms,Cancer of the Lung,Neoplasms, Lung,Neoplasms, Pulmonary,Cancer, Lung,Cancer, Pulmonary,Cancers, Lung,Cancers, Pulmonary,Lung Cancers,Lung Neoplasm,Neoplasm, Lung,Neoplasm, Pulmonary,Pulmonary Cancers,Pulmonary Neoplasm
D011014	Pneumonia	Infection of the lung often accompanied by inflammation.	Experimental Lung Inflammation,Lobar Pneumonia,Lung Inflammation,Pneumonia, Lobar,Pneumonitis,Pulmonary Inflammation,Experimental Lung Inflammations,Inflammation, Experimental Lung,Inflammation, Lung,Inflammation, Pulmonary,Inflammations, Lung,Inflammations, Pulmonary,Lobar Pneumonias,Lung Inflammation, Experimental,Lung Inflammations,Lung Inflammations, Experimental,Pneumonias,Pneumonias, Lobar,Pneumonitides,Pulmonary Inflammations
D011879	Radiotherapy Dosage	The total amount of radiation absorbed by tissues as a result of radiotherapy.	Dosage, Radiotherapy,Dosages, Radiotherapy,Radiotherapy Dosages
D002289	Carcinoma, Non-Small-Cell Lung	A heterogeneous aggregate of at least three distinct histological types of lung cancer, including SQUAMOUS CELL CARCINOMA; ADENOCARCINOMA; and LARGE CELL CARCINOMA. They are dealt with collectively because of their shared treatment strategy.	Carcinoma, Non-Small Cell Lung,Non-Small Cell Lung Cancer,Non-Small Cell Lung Carcinoma,Non-Small-Cell Lung Carcinoma,Nonsmall Cell Lung Cancer,Carcinoma, Non Small Cell Lung,Carcinomas, Non-Small-Cell Lung,Lung Carcinoma, Non-Small-Cell,Lung Carcinomas, Non-Small-Cell,Non Small Cell Lung Carcinoma,Non-Small-Cell Lung Carcinomas
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D017564	Radiation Pneumonitis	Inflammation of the lung due to harmful effects of ionizing or non-ionizing radiation.	Pneumonia, Radiation,Pneumonitis, Radiation,Radiation Pneumonia
D059248	Chemoradiotherapy	Treatment that combines chemotherapy with radiotherapy.	Concurrent Chemoradiotherapy,Concomitant Chemoradiotherapy,Concomitant Radiochemotherapy,Concurrent Radiochemotherapy,Radiochemotherapy,Synchronous Chemoradiotherapy,Chemoradiotherapies,Chemoradiotherapies, Concomitant,Chemoradiotherapies, Concurrent,Chemoradiotherapies, Synchronous,Chemoradiotherapy, Concomitant,Chemoradiotherapy, Concurrent,Chemoradiotherapy, Synchronous,Concomitant Chemoradiotherapies,Concomitant Radiochemotherapies,Concurrent Chemoradiotherapies,Concurrent Radiochemotherapies,Radiochemotherapies,Radiochemotherapies, Concomitant,Radiochemotherapies, Concurrent,Radiochemotherapy, Concomitant,Radiochemotherapy, Concurrent,Synchronous Chemoradiotherapies