Emboli arising from Deep Vein Thrombosis (DVT) or (less often) from the core surgical site are a potentially devastating in the post-operative period for a Surgical patient, be it a benign or a malignant condition. Venous thromboembolism are more frequently complications of orthopaedic surgery, long surgical procedures and delayed mobilisation. Theoretically, emboli can block vessels anywhere in the body and resultant ischemia causing problems based on the organ involved. Pulmonary emboli are a dreaded complication in the post-operative period so care is always taken to reduce its occurrence, because when it does occur can be acute, fulminant and produce a decompensation more rapidly than can be managed. In less fulminant cases, the clinical picture may mimic that of pneumonia or atelectasis, which could cause a delated diagnosis. Preventive steps include early mobilisation, physiotherapy, use of compressive stockings and pharmacological thromboprophylaxis. Temporary/prophylactic IVC filters are being used in high-risk cases in some institutes.