The stage of a neuroendocrine tumour (NET) tells you its size and whether it has spread. The type is the type of cell the tumour started in. And the grade means how abnormal the cells look under the microscope.
The tests and scans you have to diagnose a lung NET give information about the type, stage and grade. This helps your doctor decide which treatment you need.
The stage of a cancer tells you its size and whether it has spread. Doctors use the number system or the TNM system to stage lung NETs.
Small cell lung cancer, large cell neuroendocrine carcinoma, typical carcinoid and atypical carcinoid are the 4 types of lung NETs.
The grade gives doctors an idea of how the tumour might behave. There are 3 grades of lung NETs.