Backgroung: Postoperative complications significantly contribute to prolonged hospitalization and intensive care unit (ICU) stay following CABG surgery. Aim: To demonstrate the role and limitations of multi-detector computed tomography angiography in the accurate detetction and follow up of thoracic extra-cardiac complications of CABG. Methods: Patients undergone ECG gated MDCT coronary angiography in CT unit in radiology department of national heart institute will be analyzed from PACS (syngo.via acquisition system) and we will include patients with observing thoracic extra-cardiac complications post CABAG. Results: 20 patients aged from 37 to 85 with 60.55±10.94 (mean ± SD) of which 80.0% is male patient. All the studied group suffer from chest pain and about two thirds (70.0%) of them suffers from respiratory distress, while only 20.0% complains of fever, 20.0% complains dry cough and only 10.0% suffers from productive cough. Redu, pleural effusion and sternal diastasis occurs among 20% of cases, pericardial hematoma in 15.0% and each of sternal suture artefact and pneumonia constitute 10.0% of them. Each of sternal mediastinal infection, SCA thrombus, surgical emphysema, pneumothorax, retrosternal collection and pericardial effusion represents 5.0% of cases. Conclusion: Redu, pleural effusion and sternal diastasis were the commonest complications as occurred among 20% of cases, followed by pericardial hematoma in 15.0% and each of sternal suture artefact and pneumonia constitute 10.0% of them