A 61-year-old male with a background of COPD and non-small cell lung carcinoma diagnosed ten years prior to presentation was seen with chest symptoms. He was an ex-smoker and presented with exertional dyspnoea, chest pain, cough, and wheeze. He had been on chemoradiotherapy for his cancer. The patient was seen in the clinic and admitted intermittently due to shortness of breath, pleural effusion, and exacerbations of COPD. He had undergone CT, MRI, PET scan and missed the PAD diagnosis due to post-chemo-radiotherapy effects. The patient was diagnosed with PAD incidentally through CTPA. The patient was treated medically throughout for Pulmonary hypertension. He was not fit for any surgical intervention and passed away approximately 21 months after diagnosis of Pulmonary artery dissection. The case highlight survival of months in a case of Pulmonary artery dissection without any intervention therapy, including surgery