Paracarcinoma syndrome refers to the non-metastatic chest manifestations of lung cancer. Include hypertrophic pulmonary osteoarthropathy, ectopic gonadotropin, adrenocorticotropic hormone-like secretion, antidiuretic hormone secretion, neuromuscular syndrome, hypercalcemia and carcinoid syndrome. Carcinoid syndrome is characterized by abnormal skin, cardiovascular, gastrointestinal and respiratory functions. It is related to the release of different vasoactive substances by tumors.