Mediastinal fibrosis Mediastinal fibrosis also known as fibrosing mediastinitis or sclerosing mediastinitis, is a rare disease that causes fibrous tissue (scar tissue) and inflammation to

Spontaneous pneumothorax Spontaneous pneumothorax is the sudden onset of a collapsed lung with the presence of air or gas in the pleural cavity (the space

Inferior Vena Cava Syndrome Inferior vena cava syndrome (IVCS) also called inferior vena cava obstruction (IVCO) is a collection of clinical signs and symptoms resulting from

Glycogen storage disease Glycogen storage disease (GSD) also known as glycogenoses is a diverse group of rare inherited metabolic disorders (there are over 20 types of

Restrictive cardiomyopathy Restrictive cardiomyopathy (RCM) also called infiltrative cardiomyopathy or  constrictive cardiomyopathy, is a rare group of heart disease that occurs when your heart ventricles (lower chambers)

Werner syndrome Werner syndrome is a rare inherited disorder that is characterized by the appearance of unusually accelerated aging (progeria). Although Werner syndrome is typically

Pseudoxanthoma elasticum Pseudoxanthoma elasticum (PXE) also known as Gronblad-Strandberg syndrome, is the name given to a group of inherited connective tissue disorders that causes calcium and

Danon disease Danon disease is a rare X-linked dominant genetic disorder that is characterized by weakening of the heart muscle (cardiomyopathy); weakening of the skeletal muscles

Superior vena cava syndrome Superior vena cava syndrome (SVCS) also called superior vena cava obstruction (SVCO) is a collection of clinical signs and symptoms resulting from

Miosis Miosis is a medical term for constriction of the pupil. It is the opposite of mydriasis. It is seen in a variety of medical

Constrictive pericarditis Constrictive pericarditis also called restrictive pericarditis is a chronic (long-term) condition that causes the pericardium or the pericardial sac (a double-walled sac containing

Mitral valve regurgitation Mitral valve regurgitation also called mitral valve insufficiency, mitral regurgitation, mitral incompetence or leaky mitral valve, is a disorder in which the mitral valve