Lipomatous hypertrophy of the interatrial septum (LHIS) is a relatively uncommon disorder of the heart characterized by benign fatty infiltration of the interatrial septum. It is commonly found in elderly and obese patients as an asymptomatic incidentally discovered finding.

What is Lipomatous hypertrophy of the interatrial septum?

Lipomatous hypertrophy of the interatrial septum (LHIS) is a relatively uncommon disorder of the heart characterized by benign fatty infiltration of the interatrial septum. It is commonly found in elderly and obese patients as an asymptomatic incidentally discovered finding.

What is the definition of Lipomatous hypertrophy?

Lipomatous hypertrophy of the interatrial septum is a benign cardiac mass characterised as a non-encapsulated mass of fatty tissue that infiltrates the atrial septum.

Why is the interatrial septum important?

The interatrial septum is a thin wall of tissue that separates the right and left atria of the heart. In adult life, its main function is to separate the two atrial chambers so that there is no shunting of blood between them.

Where is the interatrial septum?

Structure. The interatrial septum is a septum that lies between the left atrium and right atrium of the human heart.

What is interatrial septal aneurysm?

Interatrial septal aneurysm or atrial septal aneurysm (ASA) is defined as an abnormal protrusion of the interatrial septum. The exact length of the protrusion that defines an interatrial septal aneurysm varies in the literature, ranging from >11 mm to >15 mm beyond normal excursion in adults 4,5 and 5 mm in children.

What is a myxoma?

A myxoma is a primary heart (cardiac) tumor. This means that the tumor started within the heart. Most heart tumors start somewhere else.

What is a cardiac lipoma?

Cardiac lipomas are rare benign tumors of the heart. They are usually asymptomatic and are thus most often diagnosed on autopsies. Symptoms, when present, depend upon the location within the heart. Typical locations are the endocardium of the right atrium and the left ventricle.

What is located on the interatrial septum close to the tricuspid valve?

The true interatrial septum near the tricuspid annulus consists of the anterior and midseptal regions. Midseptal pathways are inserted into the triangle of Koch region, close to the compact AV node.

What does interatrial mean?

Medical Definition of interatrial : situated between the atria of the heart.

What is the meaning of interatrial septum?

[ ĭn′tər-ā′trē-əl ] n. The wall between the atria of the heart.

What is the treatment for interatrial septal aneurysm?

Therapeutic options for prevention of recurrent strokes in patients with atrial septal aneurysm as well as atrial septal abnormality – including patent foramen ovale (PFO) and ostium secundum atrial septal defect (ASD) – are medical therapy with antiplatelet agents or anticoagulants and surgical or percutaneous closure …

How serious is an interatrial septal aneurysm?

Associations. Interatrial septal aneurysm is associated with an increased incidence of peripheral arterial embolism and increased stroke risk.