Pulmonary Embolism - Diagnosis Pulmonary embolism is diagnosed by way of a computed tomography pulmonary angiogram which consists of the injection of the dye into the blood vessel before the scan is taken. Conclusion Soon after surgery, proper arm swelling decreased and also a pulmonary embolus to your lung was averted. https://sgvasculargrp.com/medical-condition/deep-vein-thrombosis/