Cystic tumor of the atrioventricular nodal region

Cystic tumour of the atrioventricular nodal region
Micrograph of a cystic tumour of the atrioventricular nodal region. H&E stain.
Classification and external resources
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Cystic tumour of the atrioventricular nodal region is a very rare tumour of the heart in the region of the atrioventricular node. It is also known as mesothelioma of the atrioventricular node.

It may present as a cardiac arrhythmia or as sudden cardiac death.

Cystic tumours of the atrioventricular nodal region, true to their name, have cystic spaces, which are lined by a single layer of histomorphologically benign epithelial cells. The appearance is similar to that of lymphangioma and this is a name that has been used for this tumour.

The treatment of cystic tumours of the atrioventricular nodal region is surgical excision.

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