肺类癌(carcinoid)是一种原发于肺神经内分泌细胞的低度恶性肿瘤,起源于支气管黏膜上皮及腺体中的嗜银细胞(Kultchitsky细胞,K细胞),属于肺神经内分泌肿瘤。肺类癌少见,占肺部肿瘤的0.5%~5%,发生率在肺恶性肿瘤中约0.6%~1.3%~([1])。包括典型肺类癌(typical carcinoid,TC)和非典型肺类癌(atypical carcinoid,AC)。TC与AC发病率有 Pulmonary carcinoid is a kind of low-grade malignant tumor that originates from the neuroendocrine cells of the lung. It originates from the eutrophic cells (Kultchitsky cells, K cells) in the bronchial epithelium and glands and belongs to the lung neuroendocrine tumor. Pulmonary carcinoid is rare, accounting for 0.5% to 5% of lung tumors, and the incidence is about 0.6% to 1.3% in lung cancer ([1]). Including typical carcinoid (TC) and atypical carcinoid (AC). Incidence of TC and AC