Is Moderate-intensity Stereotactic Body Radiation Therapy for Ultra-central Lung Tumor a Feasible Option?

Ultra-central (UC) lung tumors are defined as those abutting the proximal bronchial trees. Stereotactic body radiation therapy (SBRT) for UC tumors is regarded to have possibility of serious toxicities including hemoptysis. However, SBRT could be a curative chance for inoperable patients avoiding pneumonectomy.