Pericardial lipoblastomas are rare benign tumours that usually occur in children less than 3 years of age. They originate from embryonic fat cells and are divided into two forms, based on location 1:
- superficial form: well-circumscribed and well-encapsulated
- deep form: not well-circumscribed and infiltrative and termed lipomatosis
For a general discussion please refer to the article on lipoblastomas.
Pericardial lipoblastomas are echogenic compared to the adjacent cardiac tissue 1.
Pericardial lipoblastomas are composed purely of fatty tissue (<0 HU in density) and do not enhance 1.
The lesion exhibits high signal on T1 and T2 which becomes suppressed on fat-suppression sequences 1.