Lung misshapen tumors usually cause obstructive pneumonia, complications of bronchiectasis, inflammation of the airways and other hazards. In serious cases, it may cause symptoms such as dyspnea and purple lips, which may affect the quality of life of patients and endanger their lives. 1. Obstructive pneumonia: the stenoma in the lungs will gradually increase in size, and when the stenoma in the lungs grows too large, it will lead to compression of the airways, resulting in obstructive pneumonia. 2. Complications of bronchiectasis: when the growth of lung misshapen tumor reaches a certain degree, it will compress the large blood vessels of the heart and lung tissues, which will cause thoracic deformity and lead to complications of bronchiectasis. 3. Inflammation of trachea: lung malformation tumor may cause infection of upper respiratory tract, meanwhile, it may stimulate bronchial tubes or compress bronchial tubes, thus leading to inflammation of trachea. 4. Difficulty in breathing: lungs misshapen tumor is mainly caused by lung tissues due to embryonic malformation, which will lead to the symptom of dyspnea in severe cases, affecting the quality of life of patients. 5. Purple lips: lung malformation tumor mainly exists in the main bronchus and lobar bronchus, which will lead to the symptoms of purple lips. It is suggested that patients with lung malformation tumor should go to the hospital for examination in time, and take symptomatic treatment under the guidance of doctors.