Related Experiment Video
Updated: Jul 16, 2026
07:10
Direct Intrabronchial Administration to Improve the Selective Agent Deposition Within the Mouse Lung
Published on: May 20, 2019
Pulmonary changes after single dose interstitial brachytherapy for lung tumors.
Jafar Al Mansoor1, Ali Rashid2, Hathal Haddad3
1Department of Radiation Oncology, WEGE Klinik, Bonn, Germany; Department of Radiation Oncology, RWTH Aachen University, Aachen, Germany.
Brachytherapy
|July 14, 2026
Summary
High-dose-rate brachytherapy for lung tumors causes expected tissue consolidation and retraction in most patients. While long-term tumor control is high, monitor for pneumonitis, atelectasis, and pleural effusion.
Area of Science:
- Pulmonary Medicine
- Radiation Oncology
- Medical Imaging
Background:
- The effects of high single brachytherapy doses on lung tissue are not well understood.
- Lung cancer treatment often involves radiation, necessitating analysis of tissue response.
Purpose of the Study:
- To analyze the reaction of lung tissue to extreme single high dose rate (HDR) brachytherapy doses.
- To evaluate long-term local tumor control and radiation-induced lung tissue changes.
Main Methods:
- Retrospective analysis of 46 lung tumors in 32 patients treated with HDR brachytherapy (median 20Gy).
- Evaluation of treatment planning and follow-up CT scans up to 60 months post-treatment.
Main Results:
- 81% long-term local tumor control was achieved.
- Pneumonitis occurred in 73% of patients (Grade 1: 57%, Grade 2: 9%, Grade 3: 7%).
- Early changes included consolidation and ground glass opacity; later changes showed progressive consolidation and retraction, with ~10% experiencing atelectasis or pleural effusion.
Conclusions:
- Tissue consolidation is expected in all patients following high-dose, single-fraction brachytherapy.
- Progressive retraction of consolidated lung tissue is common, particularly in the second year post-treatment.
- A lower risk of partial atelectasis and pleural effusion exists.
