Fatty lesions of the atria and interatrial septum

Cunningham, Kristopher S.; Veinot, John P.; Feindel, Christopher M.; Butany, Jagdish

doi:10.1016/j.humpath.2006.04.028

Cited by 27 publications

(16 citation statements)

References 25 publications

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“…The overlapping histology and the common site of origin suggest a possible relationship between hibernoma and LHIS. In keeping with this hypothesis, it has been observed that the interatrial area, which normally contains extracardiac fat tissue, 6 can also include normal brown adipose tissue 7 . This latter finding seems to be in keeping with the hypothesis of residual brown fat as the origin of the lesion we describe herein.…”

supporting

confidence: 90%

“…Herein we report a case of hibernoma which probably originates from the interatrial septum and further involves the right atrium. Among the fatty lesions of the interatrial septum, cardiac lipoma was excluded as it usually entraps few (if any) cardiac cells and is devoid of brown fat cells 6 . The distinction between cardiac hibernoma and lipomatous hypertrophy of the interatrial septum (LHIS) is more difficult.…”

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confidence: 99%

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Cardiac hibernoma: a case report

et al. 2012

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confidence: 90%

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confidence: 99%

Cardiac hibernoma: a case report

et al. 2012

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“…Differential diagnosis of lipomatous hypertrophy of the interatrial septum includes lipomas, which, unlike lipomatous hypertrophy, are distinctly encapsulated, and are mostly found in young patients [22]. Similarly to adipose infiltration of the interatrial septum, they remain clinically ”silent”.…”

Section: Discussionmentioning

confidence: 99%

Lipomatous hypertrophy of the interatrial septum in ECG-gated multislice computed tomography of the heart

et al. 2012

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SummaryBackgroundLipomatous hypertrophy of the interatrial septum (LHIS) is a benign disorder characterized by fat accumulation in the interatrial septum (IAS).The purpose of the study was to analyze the incidental detection of LHIS in patients with various clinical conditions, referred to ECG-gated multislice computed tomography (ECG-MSCT) examinations of the heart.Material/MethodsThe ECG-MSCT examinations of 5786 patients (2839 women; 2947 men), were analyzed. The examinations were performed using 8-row (1015 patients) and 64-row (4771 patients) MSCT, in pre- and postcontrast scanning.We analyzed the shape of the IAS, density and maximal thickness of IAS, the thickness of the epicardial adipose tissue, and the degree of contact of IAS with the ascending aorta and superior vena cava. We also determined body mass index (BMI) in patients with LHIS.ResultsLHIS was detected in 56 (0.96%) patients, with an average age of 61.5±9.8 years. The mean BMI in the analyzed group was 30.1±4.86. During the end-diastolic phase the thickness of IAS was significantly higher (p<0.0001), and on average equaled 18.3mm. The mean optical density of the IAS was conspicuously higher (p<0.0001) in post-contrast phase than in pre-contrast phase. The thickness of the epicardial adipose tissue in the region of the left atrioventricular groove was on average 15 mm. In all cases the dumbbell shape of IAS was observed.ConclusionsThe incidental frequency of LHIS occurrence in patients diagnosed with the ECG-MSCT examinations is about 1%. In most subjects it is linked with a higher BMI and increased thickness of the epicardial adipose tissue.

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“…10). The superior and inferior "mass" is corresponds to the fat-filled groove between atria (Waterston's groove) and ventricles (inferior pyramidal space), respectively,26)27) that is, fatty mass of lipomatous hypertrophy is contiguous with epicardial fat pads. It is understandable that patients with lipomatous hypertrophy tend to have heavy pericardial and periaortic fat infiltration 24).…”

Section: Atrial Septum Variants: Atrial Septal Aneurysm Vs Lipomatoumentioning

confidence: 99%