Cellulitis is an infection of the skin or underlying tissues. Bacteria can be introduced into the skin through an area of open skin, such as an insect bite. However, in many cases, there is not an obvious site where bacteria entered the skin. Once bacteri
The Pulmonary Emboli Highway Pulmonary embolism (PE) is a blockage of the main artery of the lung or one of its branches by a substance that has travelled from elsewhere in the body through the bloodstream (embolism).