Table 2: List of different interventions undertaken in small bowel neuroendocrine tumour patients; it lists the intervention and number of procedures undertaken.

Intervention No. of interventions No. of patients Total number that had primary tumour resected 100 100 Failed resection of primary tumour 4 4 No resection of primary tumour 34 34 Primary tumour resection plus liver resection/RFA 14 14 Resection of liver metastases 48 37 Resection of other sites of metastatic disease 2 2 Liver transplant 2 2 Carcinoid heart valve surgery 3 3 Further bowel resection 3 3 TACE/TAE 23 17 SIRT 7 6 PRRT 19 16 131I-MIBG therapy 14 14 Radiotherapy 2 2 Chemotherapy 10 10

For 131I-MIBG (iodine-131-meta-iodobenzylguanidine) and PRRT (peptide receptor radiotargetted therapy) an intervention comprised of 3-4 cycles of therapy. Each embolization was counted as a separate intervention. Heart value surgery involved tricuspid valve replacement in 2 cases, and one case had a tricuspid valve replacement plus pulmonary valvuloplasty. Abdominal radiotherapy was performed in two patients.