Carcinoid heart disease
If you've been diagnosed with NETs you may be at risk of developing carcinoid heart disease - this affects the function of the valves and can lead to heart failure.
This happens because substances produced by tumour cells in the liver are transported to the right side of the heart leading to deposits of fibrous tissue on the surface of the heart and heart valves.
If you develop this condition, you may be considered for cardiac surgery prior to undertaking gastrointestinal surgery. Valve replacement can help improve the symptoms of carcinoid heart disease.