pericardial lipoma

Pericardial lipomas are slowly growing benign tumors of the pericardium that are asymptomatic unless large in size, where they can cause pressure symptoms.

Radiographic features

Echocardiography

Tends to be echogenic structure adjacent or inside the pericardium.

CT

Seen as a fatty attenuating tumor that displays <0 HU density. No enhancement post-contrast administration. The lesion may not be well-circumscribed like other lipomas.

MRI

Exhibits bright signal on T1 and T2 with no contrast enhancement. Fat suppression techniques e.g. STIR, SPAIR and FAT SAT confirm the fatty contents.

Differential diagnosis

Imaging differential considerations include

• pericardial lipoblastoma: can have a similar appearance but occurs in children <3 years of age

As a broader differential consider

• other fat-containing mediastinal lesions

Siehe auch:

• pericardial tumors

und weiter:

• pericardial neoplasms