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

He used chloroform for the first time at Cape Maclear on 2 March 1876 in a successful operation to remove a cystic tumour above the right eye of a young man, to the astonishment of the local people.

Pancreatic mucinous cystic neoplasm, also mucinous cystic neoplasm of the pancreas and mucinous cystic tumour, is a grouping of cystic neoplasms that arise from the pancreas.

Cystic tumour of atrioventricular nodal region (CTAVN) CTAVN is of endodermal origin and occurs exclusively in the area of the AV node, tricuspid valve, and interatrial septum.