Inclusion Criteria:  Patients with oligometastatic non-small cell lung cancer (NSCLC), including a primary lung tumour (± hilar/mediastinal adenopathy) with up to 5 synchronous metastases Radical treatment intent to all sites is recommended at multi-disciplinary tumour board or by discussion by medical oncologist and radiation oncologist and/or surgeon. Age 18 years or older Good performance status (Eastern Cooperative Oncology Group [ECOG 0-1) with life-expectancy of at least 6 months as determined by enrolling physician  Patient has undergone staging investigations less than 3 months prior to registration.  Positron Emission Tomography (PET) / Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) brain (CT brain with contrast if contraindication to MRI) OR CT chest/abdomen, radionucleotide bone scan and MRI of brain (CT brain with contrast if contraindication to MRI) Pathologic confirmation of NSCLC  Exclusion Criteria:  Contraindication to Endobronchial Ultrasound (EBUS) / Endoscopic Ultrasound (EUS) Unable to provide consent for EBUS/EUS Contraindication to chest radiotherapy Pregnant or lactating women