Cystic tumour of the atrioventricular nodal region is a very rare tumour of the heart

Heart

The heart is a myogenic muscular organ found in all animals with a circulatory system , that is responsible for pumping blood throughout the blood vessels by repeated, rhythmic contractions...

 in the region of the atrioventricular node

Atrioventricular node

The atrioventricular node is a part of the electrical control system of the heart that coordinates heart rate. It electrically connects atrial and ventricular chambers...

. It is also known as mesothelioma

Mesothelioma

Mesothelioma, more precisely malignant mesothelioma, is a rare form of cancer that develops from the protective lining that covers many of the body's internal organs, the mesothelium...

 of the atrioventricular node.

Pathology

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

Lymphangioma

Lymphangiomas are malformations of the lymphatic system, which is the network of vessels responsible for returning to the venous system excess fluid from tissues. These malformations can occur at any age and may involve any part of the body, but 90% occur in children less than 2 years of age and...

and this is a name that has been used for this tumour.

Treatment

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