CT images of patients after SBRT with local recurrence. (A) Seventy-four years old male, CT scan pre-SBRT NSCLC stage IB. Previously right pneumonectomy for lung cancer; (B) 6 months after SBRT: scar-like fibrosis; (C) 12 months after SBRT: enlargement after 12 months, loss of air bronchogram, bulging margin; (D) 18 months after SBRT relapse SUVmax: 25.8. CT, computed tomography; SBRT, stereotactic body radiation therapy; NSCLC, non-small cell lung cancer; SUV, standardized uptake value.