Case Series Incidence of Gastrointestinal Neuroendocrine Tumor: Case Series, Armed Forces Hospital Southern Region, Hospital-Based Tumor Board Registry Abdullah Mohammed Albishi , 1 Ahmed Mostafa Mohamed Mostafa, 2 Hatim Mahgoub Ali, 3 Yahia Atiah Alhagawi, 1 Mohamed F. Bazeed, 4 Mahmoud R. A. Hussein, 5 Elshfeia Elhag Mohmed Ali Aloba, 3 and Ahmed Youssef Aboelyazid 6 1 Gastroenterology and Endoscopy Department, Armed Forces Hospital Southern Region, Khamis Mushayt, Saudi Arabia 2 Clinical Oncology, Faculty of Medicine, Ain-Shams University, Egypt 3 Oncology Department, Armed Forces Hospital Southern Region, Khamis Mushayt, Saudi Arabia 4 Radiology Department, Armed Forces Hospital Southern Region, Khamis Mushayt, Saudi Arabia 5 Pathology Department, Armed Forces Hospital Southern Region, Khamis Mushayt, Saudi Arabia 6 Preventive Medicine Department, Armed Forces Hospital Southern Region, Khamis Mushayt, Saudi Arabia Correspondence should be addressed to Abdullah Mohammed Albishi; dr.abdullah6975@gmail.com Received 9 April 2020; Revised 27 August 2020; Accepted 7 October 2020; Published 20 October 2020 Academic Editor: Peter F. Lenehan Copyright © 2020 Abdullah Mohammed Albishi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Neuroendocrine tumors are aggressive and rare tumors which can occur almost everywhere in the body. The annual incidence of neuroendocrine tumors is 2.5-5 per 100000. We report seven cases of gastrointestinal neuroendocrine tumors which were diagnosed and treated at our hospital from the time period of 2016-2018 knowing that the total number of our hospital tumor board cases registry during the same period was 444 cases. 1. Introduction Generally, Neuroendocrine tumors (NETs) are rare tumors comprising ~2% of all malignancies [1] with the gastrointestinal tract and the lung as the most common sites [2]. Neuroendocrine tumors (NETs) are a heterogeneous group of epithelial neoplastic proliferations arising in many body organs. Irrespective of their primary site and of their grade of differentiation, neoplastic cells share features of neural and endocrine differentiation: the “neuro” property is based on the identification of dense core granules that are similar to dense core granules (DCGs) present in serotoner- gic neurons, which store monoamines, and the “endocrine” property refers to the synthesis and secretion of these mono- amines which is about two-thirds of NETs that arise in the gastrointestinal tract and pancreas [1, 3]. 2. Case Reports This case series describes seven cases of gastrointestinal NETs diagnosed and presented in the tumor board at our hospital from the time period starting from 01/01/2016 till 31/12/2018 as shown in Table 1. Out of seven cases, four were male and three were females. Four patients out of seven present beyond 60 years of age. Appendix is the most common site of NETs in our hospital. 2.1. 1st Case. A 60-year-old male presented with abdominal pain and vomiting with constipation for 4 days; CT of the abdomen showed an enhancing mass at the ileocecal area including the appendix; he was diagnosed as having complete intestinal obstruction and underwent right hemicolectomy; histopathology report showed goblet cell carcinoid of the Hindawi Case Reports in Oncological Medicine Volume 2020, Article ID 8819392, 7 pages https://doi.org/10.1155/2020/8819392