Well the results from your endoscopy are in. They have shown up something unusual, which suggest carcinoid syndrome. This happens when hormones are released into the blood by tumours.
These commonly form in the stomach, large or small bowel, or appendix. It would explain the stomach cramps and diarrhoea you’ve had. This type of tumour is usually slow to grow. In your case, it has been detected early, although you will need surgery to remove it.
But for cases where surgery isn’t appropriate drug therapy, such as octreotide, chemotherapy, or radiotherapy, will aim at reducing the size of the tumour and its impact on a persons health.