Abstract
Purpose: Administration of stereotactic body radiation therapy (SBRT) to ultra-central (UC) lung tumors, generally defined as those abutting the proximal bronchial trees, is difficult due to concerns about serious toxicities. Therefore, our institution has performed moderate-intensity SBRT. Patients and methods: Patients with UC tumors underwent SBRT at a dose of 50–60 Gy in 10 fractions, with Dmax in the target volume not exceeding 110% of the prescribed dose. The primary outcomes were tumor response and overall survival (OS). Results: From January 2017 to September 2018, we treated eight patients who had been diagnosed with UC tumors. The median follow-up time was 8.6 months (range: 2.7–14.9). Five of the eight patients (62.5%) showed a complete response (CR), two (25%) had a partial response (PR), and one (12.5%) had stable disease (SD); the response and disease control rates were 87.5% and 100%, respectively. Seven patients were alive with no evidence of disease or with controlled disease until the last follow-ups, except for one patient who died due to a non-RT cause at 3 months after SBRT. One patient experienced grade 2 esophageal pain and another had grade 1 cough. No grade 3 or higher toxicities were reported. Conclusion: Moderate-intensity SBRT might aid in achieving good control of UC tumors without excessive toxicities. Future studies involving larger numbers of patients and longer follow-up times are warranted to confirm the efficacy and feasibility.
| Original language | English |
|---|---|
| Journal | International Journal of Radiation Biology |
| DOIs | |
| Publication status | Published - 2019 Jan 1 |
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Keywords
- feasibility
- radiotherapy
- Stereotactic body radiotherapy
- ultra-central tumor
ASJC Scopus subject areas
- Radiological and Ultrasound Technology
- Radiology Nuclear Medicine and imaging
Cite this
A preliminary experience of moderate-intensity stereotactic body radiation therapy for ultra-central lung tumor. / Park, Sunmin; Kim, Young; Yoon, Won Sup; Rim, Chai Hong.
In: International Journal of Radiation Biology, 01.01.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A preliminary experience of moderate-intensity stereotactic body radiation therapy for ultra-central lung tumor
AU - Park, Sunmin
AU - Kim, Young
AU - Yoon, Won Sup
AU - Rim, Chai Hong
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Purpose: Administration of stereotactic body radiation therapy (SBRT) to ultra-central (UC) lung tumors, generally defined as those abutting the proximal bronchial trees, is difficult due to concerns about serious toxicities. Therefore, our institution has performed moderate-intensity SBRT. Patients and methods: Patients with UC tumors underwent SBRT at a dose of 50–60 Gy in 10 fractions, with Dmax in the target volume not exceeding 110% of the prescribed dose. The primary outcomes were tumor response and overall survival (OS). Results: From January 2017 to September 2018, we treated eight patients who had been diagnosed with UC tumors. The median follow-up time was 8.6 months (range: 2.7–14.9). Five of the eight patients (62.5%) showed a complete response (CR), two (25%) had a partial response (PR), and one (12.5%) had stable disease (SD); the response and disease control rates were 87.5% and 100%, respectively. Seven patients were alive with no evidence of disease or with controlled disease until the last follow-ups, except for one patient who died due to a non-RT cause at 3 months after SBRT. One patient experienced grade 2 esophageal pain and another had grade 1 cough. No grade 3 or higher toxicities were reported. Conclusion: Moderate-intensity SBRT might aid in achieving good control of UC tumors without excessive toxicities. Future studies involving larger numbers of patients and longer follow-up times are warranted to confirm the efficacy and feasibility.
AB - Purpose: Administration of stereotactic body radiation therapy (SBRT) to ultra-central (UC) lung tumors, generally defined as those abutting the proximal bronchial trees, is difficult due to concerns about serious toxicities. Therefore, our institution has performed moderate-intensity SBRT. Patients and methods: Patients with UC tumors underwent SBRT at a dose of 50–60 Gy in 10 fractions, with Dmax in the target volume not exceeding 110% of the prescribed dose. The primary outcomes were tumor response and overall survival (OS). Results: From January 2017 to September 2018, we treated eight patients who had been diagnosed with UC tumors. The median follow-up time was 8.6 months (range: 2.7–14.9). Five of the eight patients (62.5%) showed a complete response (CR), two (25%) had a partial response (PR), and one (12.5%) had stable disease (SD); the response and disease control rates were 87.5% and 100%, respectively. Seven patients were alive with no evidence of disease or with controlled disease until the last follow-ups, except for one patient who died due to a non-RT cause at 3 months after SBRT. One patient experienced grade 2 esophageal pain and another had grade 1 cough. No grade 3 or higher toxicities were reported. Conclusion: Moderate-intensity SBRT might aid in achieving good control of UC tumors without excessive toxicities. Future studies involving larger numbers of patients and longer follow-up times are warranted to confirm the efficacy and feasibility.
KW - feasibility
KW - radiotherapy
KW - Stereotactic body radiotherapy
KW - ultra-central tumor
UR - http://www.scopus.com/inward/record.url?scp=85067576458&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85067576458&partnerID=8YFLogxK
U2 - 10.1080/09553002.2019.1626026
DO - 10.1080/09553002.2019.1626026
M3 - Article
JO - International Journal of Radiation Biology
JF - International Journal of Radiation Biology
SN - 0955-3002
ER -