The local doctor was not sure whether it was lung cancer or not and kept him under outpatient observation. However, Professor Guo Huiqin from the Department of Thoracic Surgery of Peking Union Medical College Hospital thought that the nodule had a tendency to increase in size and operated on him at once. The pathology result came out and it was early stage lung cancer. Guo Huiqin, who has been dealing with lung cancer for more than 10 years, told Life Time that if this patient continues to delay, the best time for treatment is likely to be lost. However, in clinical practice, most patients are not as lucky as Wang. Due to the atypical early symptoms, most lung cancer patients are already in the middle and late stages when they are diagnosed!