metastatic carcinoidmetastatic carcinoid cancermetastatic carcinoid syndromecarcinoid tumor metastasis to livercarcinoid liver metastases prognosiscarcinoid syndrome liver metastasesdiagnosis of carcinoid tumorcarcinoid tumors in stomachcarcinoid tumors in livercarcinoid tumor liver metastasesneuroendocrine carcinoid tumorsmetastatic neuroendocrine tumors