What is Lipomatous hypertrophy of interatrial septum?

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.

Is Lipomatous hypertrophy serious?

Lipomatous hypertrophy of the interatrial septum is a benign condition in most cases. Rarely, if severe interatrial hypertrophy is present, patients may develop obstruction of right atrial filling, shortness of breath, and/or heart failure symptoms.

What is the definition of Lipomatous hypertrophy?

Lipomatous hypertrophy of the IAS is defined as fatty infiltration ≫2 cm thick of the atrial septum [1]. It comprises of a noncapsulated, circumscribed, fatty mass first described in, 1964 [2].

Is interatrial septum thick?

The IAS is thickest peripherally and gradually narrows toward the more centrally located fossa ovalis. A region of constant thickness is frequently present between the most peripheral aspect of the IAS and the fossa ovalis.

What is the interatrial septum?

The interatrial septum (Fig. 1) is the structure that divides the primary atrium into the right and left atrial chambers. Starting the fifth week of gestation, the septum primum begins to develop, growing toward the endocardial cushions.

What is an atypical Lipomatous tumor?

Atypical lipomatous tumours are rare tumours which can develop in the soft tissues of the body. This could be in any part of the body, but they are more common in the thigh and arm. They are benign (non-cancerous) tumours but can have a tendency to recur.

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%).

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.

What is the function of the interatrial and interatrial septum?

cardiovascular system. …a partition known as the interatrial septum; the lower chambers, the ventricles, are separated by the interventricular septum. The atria receive blood from various parts of the body and pass it into the ventricles. The ventricles, in turn, pump blood to the lungs and to the remainder of the body …

What is the purpose of the interatrial septum?

The interatrial septum is the wall of tissue that separates the right and left atria of the heart.

What causes atypical Lipomatous tumor?

Atypical lipomatous tumours arise from the fat cells within the body and most commonly affect adults. We will confirm your diagnosis once we have carried out ultrasound and MRI scans (imaging), and we have the histology (results) from the biopsy taken from the tumour tissue, if this is needed.

What is Lipomatous?

A lipoma is a slow-growing, fatty lump that’s most often situated between your skin and the underlying muscle layer. A lipoma, which feels doughy and usually isn’t tender, moves readily with slight finger pressure. Lipomas are usually detected in middle age. Some people have more than one lipoma.

Where does lipomatous hypertrophy of the interatrial septum occur?

cardiac rhythm disturbances 7,8 : lipomatous hypertrophy is usually situated in the area of at least two described interatrial conduction pathways (anterior and middle internodal pathways), and their interruption could be the major reason for rhythm disorders such as

What causes a bulge in the interatrial septum?

Microscopically, lipomatous hypertrophy of the interatrial septum (LHIS) is characterized by fat infiltration between the myocardial fibers of the atrial septum. LHIS also can create a masslike bulge.

What is the prevalence of lipomatous hypertrophy in women?

The prevalence of LHIS is estimated to be between 1-8%. The incidence increases with age, body mass and chronic corticosteroid therapy. There may be a higher incidence in women 6.

What kind of MRI reveals bilobar interatrial septum?

MRI diagnosis is straightforward in classic cases, and this entity is characterized by a bilobar interatrial septal thickening revealing homogeneous high signal intensity similar to that of subcutaneous fat tissue. The exclusively fatty nature of such masses can be seen on fat-suppressed imaging.