Appendiceal carcinoid is a rare type of tumor that originates in the appendix, a small pouch connected to the large intestine. These tumors are neuroendocrine in nature, meaning they arise from hormone-producing cells. Most appendiceal carcinoids are small and often discovered incidentally during surgery for other conditions. While many appendiceal carcinoids are benign and may not cause symptoms, larger tumors can lead to complications such as appendicitis or metastasis to other organs. Diagnosis typically involves imaging studies and histological examination after surgical removal. Treatment usually consists of surgical resection, which is often curative.