Neuroendocrine tumors are slow-growing neoplasms, histologically based on enteroendocrine cells. They are tumors with different degrees of differentiation, uncertain biological nature and metastatic ability. Their most common localization is the gastrointestinal tract, with a special group of the neuroendocrine tumors of appendix, which are incidentally found after appendectomy. In case report, we would like to present a case of a patient with neuroendocrine tumors of appendix diagnosed by colonoscopy.
Primary Renal Well-Differentiated Neuroendocrine Tumor (Carcinoid) in a Horseshoe Kidney