carcinoida. 良性腫瘤的n. 良性腫瘤學術名詞類癌：畜牧學、醫學、獸醫學、實驗動物及比較醫學瘤：實驗動物及比較醫學英文釋義a small tumor (benign or malignant) arising from the mucosa of the gastrointestinal tract; usually associated with excessive secretion of serotonin