Cardiovascular ImagingLymphangioma
tumour composed of
lymph spaces and channels.
Cystic lymphangioma, also called
cystic hygroma, usually occurs in the neck, upper
mediastinum or groin, and more frequently in children. They are usually multilocular
cystic spaces. The presence, number and extent of lymphangiomas are usually displayed well on contrast-enhancd fat-saturated T1-weighted spin echo images.
CT and
MRI may display the multiple
cystic space of
mediastinal and periardial lymphangiomas (
Fig.1). The more aggressive ones, such as mixed lymphangiomahaemangioendothelioma (Gorham's disease) produce extensive infiltrating soft tissue masses of the
mediastinum and
pericardium and may cause chylothorax.
CBH
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ECG-gated spin-echo image demonstrates an exensive mass within the pericardium causing compression of the right ventricle. The mass contains multiple low signal foci representing lymphatic spaces and channels.
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Lymphangioma, Fig.1 | |