The sinuses are hollow spaces in the skull and the face bones around your nose. There are four pairs of sinuses, named for the bones that they’re located in. The sinuses collectively are called the ...

Dry sinuses occur when the mucous membranes in your sinuses lack proper moisture. This can lead to dry nasal passages, discomfort, nosebleeds, and similar unpleasant symptoms. In severe cases, ...

Pericarditis is inflammation of the sac around the heart, called the pericardium. If pericarditis becomes chronic, it can lead to pericardial effusion. This is when the pericardium fills with fluid.

A 58-year-old woman presents to the hospital reporting fatigue, swelling of the legs and feet, and shortness of breath. She explains that her symptoms have been getting worse over the past 2 months.

If pericarditis persists for more than three months, then it is called chronic pericarditis. Constrictive pericarditis (CP) (hardness of the pericardium tissue through scarring) and chronic effusive ...

The Edwards Sapien valve consists of a balloon-expandable stent of stainless steel surrounded by a polyester fabric sealing cuff in which a trileaflet valve made from bovine pericardium is mounted.

In this Journal feature, information about a real patient is presented in stages (boldface type) to an expert clinician, who responds to the information by sharing relevant background and reasoning ...