What is lipomatous hypertrophy of interatrial septum?
Lipomatous hypertrophy of the interatrial septum (LHIS) is a benign cardiac mass characterised as a non-encapsulated mass of fatty tissue that infiltrates the atrial septum first described in 1964.
What causes Lipomatous hypertrophy of the interatrial septum?
Lipomatous hypertrophy of the interatrial septum is a common finding seen on echocardiography with an incidence reported to be 1–8% of the general population. It is more commonly seen in women and in the elderly and is associated with obesity, steroid use, and emphysema.
What does the interatrial septum do?
The interatrial septum is the wall of tissue that separates the right and left atria of the heart.
What is asymmetric septal hypertrophy?
Asymmetric septal hypertrophy (defined by an echocardiographic interventricular septum to left ventricular free wall thickness ratio of greater than or equal to 1.3 and by the presence of suggestive two-dimensional echocardiographic abnormalities) was found in 28 patients (5%).
What does Lipomatous infiltration mean?
Medical Definition of fatty infiltration : infiltration of the tissue of an organ with excess amounts of fat.
What problems can a septal defect cause if left untreated?
If a large atrial septal defect goes untreated, increased blood flow to your lungs increases the blood pressure in the lung arteries (pulmonary hypertension). Eisenmenger syndrome. Pulmonary hypertension can cause permanent lung damage.
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 is interatrial septum intact?
intact atrial septum. In the normal heart before birth, the left-sided structures fill primarily from the right atrium via the foramen ovale. With prenatal restriction, or complete premature closure of the foramen ovale (i.e., intact atrial septum), flow is diverted away from the left atrium and left ventricle.
Is interatrial septum is thin and fibrous?
The interatrial septum is a thin structure best visualized by transesophageal echocardiography but is also readily seen on transthoracic imaging, particularly in the subcostal view. The interatrial septum should by interrogated with 2D, color Doppler, and if clinically indicated, agitated saline (“bubble”) contrast.